CVE-2021-22991

KEV
Published: Mar 31, 2021 Last Modified: Ott 27, 2025
ExploitDB:
Other exploit source:
Google Dorks:
CRITICAL 9,8
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
MEDIUM 6,8
Access Vector: network
Access Complexity: medium
Authentication: none
Confidentiality: partial
Integrity: partial
Availability: partial

Description

AI Translation Available

On BIG-IP versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.2.1, 14.1.x before 14.1.4, 13.1.x before 13.1.3.6, and 12.1.x before 12.1.5.3, undisclosed requests to a virtual server may be incorrectly handled by the Traffic Management Microkernel (TMM) URI normalization, which may trigger a buffer overflow, resulting in a DoS attack. In certain situations, it may theoretically allow bypass of URL based access control or remote code execution (RCE). Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,6626
Percentile
1,0th
Updated

EPSS Score Trend (Last 91 Days)

119

Improper Restriction of Operations within the Bounds of a Memory Buffer

Stable
Common Consequences
Security Scopes Affected:
Integrity Confidentiality Availability
Potential Impacts:
Execute Unauthorized Code Or Commands Modify Memory Read Memory Dos: Crash, Exit, Or Restart Dos: Resource Consumption (Cpu) Dos: Resource Consumption (Memory)
Applicable Platforms
Languages: Assembly, C, C++, Memory-Unsafe
View CWE Details
Application

Big-Ip Global Traffic Manager by F5

Version Range Affected
From 15.1.0 (inclusive)
To 15.1.2.1 (exclusive)
cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Ddos Hybrid Defender by F5

Version Range Affected
From 13.1.0 (inclusive)
To 13.1.3.6 (exclusive)
cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Advanced Firewall Manager by F5

Version Range Affected
From 16.0.0 (inclusive)
To 16.0.1.1 (exclusive)
cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Link Controller by F5

Version Range Affected
From 13.1.0 (inclusive)
To 13.1.3.6 (exclusive)
cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Local Traffic Manager by F5

Version Range Affected
From 14.1.0 (inclusive)
To 14.1.4 (exclusive)
cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Advanced Web Application Firewall by F5

Version Range Affected
From 12.1.0 (inclusive)
To 12.1.5.3 (exclusive)
cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Access Policy Manager by F5

Version Range Affected
From 12.1.0 (inclusive)
To 12.1.5.3 (exclusive)
cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Ssl Orchestrator by F5

Version Range Affected
From 16.0.0 (inclusive)
To 16.0.1.1 (exclusive)
cpe:2.3:a:f5:ssl_orchestrator:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Link Controller by F5

Version Range Affected
From 15.1.0 (inclusive)
To 15.1.2.1 (exclusive)
cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Domain Name System by F5

Version Range Affected
From 13.1.0 (inclusive)
To 13.1.3.6 (exclusive)
cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Ddos Hybrid Defender by F5

Version Range Affected
From 15.1.0 (inclusive)
To 15.1.2.1 (exclusive)
cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Application Security Manager by F5

Version Range Affected
From 13.1.0 (inclusive)
To 13.1.3.6 (exclusive)
cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Ssl Orchestrator by F5

Version Range Affected
From 12.1.0 (inclusive)
To 12.1.5.3 (exclusive)
cpe:2.3:a:f5:ssl_orchestrator:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Advanced Web Application Firewall by F5

Version Range Affected
From 13.1.0 (inclusive)
To 13.1.3.6 (exclusive)
cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Global Traffic Manager by F5

Version Range Affected
From 14.1.0 (inclusive)
To 14.1.4 (exclusive)
cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Ddos Hybrid Defender by F5

Version Range Affected
From 16.0.0 (inclusive)
To 16.0.1.1 (exclusive)
cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Policy Enforcement Manager by F5

Version Range Affected
From 15.1.0 (inclusive)
To 15.1.2.1 (exclusive)
cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Policy Enforcement Manager by F5

Version Range Affected
From 13.1.0 (inclusive)
To 13.1.3.6 (exclusive)
cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Link Controller by F5

Version Range Affected
From 16.0.0 (inclusive)
To 16.0.1.1 (exclusive)
cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Analytics by F5

Version Range Affected
From 16.0.0 (inclusive)
To 16.0.1.1 (exclusive)
cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Link Controller by F5

Version Range Affected
From 12.1.0 (inclusive)
To 12.1.5.3 (exclusive)
cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Application Security Manager by F5

Version Range Affected
From 15.1.0 (inclusive)
To 15.1.2.1 (exclusive)
cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Application Acceleration Manager by F5

Version Range Affected
From 16.0.0 (inclusive)
To 16.0.1.1 (exclusive)
cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Application Acceleration Manager by F5

Version Range Affected
From 15.1.0 (inclusive)
To 15.1.2.1 (exclusive)
cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Link Controller by F5

Version Range Affected
From 14.1.0 (inclusive)
To 14.1.4 (exclusive)
cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Local Traffic Manager by F5

Version Range Affected
From 12.1.0 (inclusive)
To 12.1.5.3 (exclusive)
cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Global Traffic Manager by F5

Version Range Affected
From 13.1.0 (inclusive)
To 13.1.3.6 (exclusive)
cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Advanced Web Application Firewall by F5

Version Range Affected
From 15.1.0 (inclusive)
To 15.1.2.1 (exclusive)
cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Fraud Protection Service by F5

Version Range Affected
From 15.1.0 (inclusive)
To 15.1.2.1 (exclusive)
cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Ssl Orchestrator by F5

Version Range Affected
From 15.1.0 (inclusive)
To 15.1.2.1 (exclusive)
cpe:2.3:a:f5:ssl_orchestrator:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Analytics by F5

Version Range Affected
From 12.1.0 (inclusive)
To 12.1.5.3 (exclusive)
cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Advanced Web Application Firewall by F5

Version Range Affected
From 16.0.0 (inclusive)
To 16.0.1.1 (exclusive)
cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Ssl Orchestrator by F5

Version Range Affected
From 13.1.0 (inclusive)
To 13.1.3.6 (exclusive)
cpe:2.3:a:f5:ssl_orchestrator:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Access Policy Manager by F5

Version Range Affected
From 15.1.0 (inclusive)
To 15.1.2.1 (exclusive)
cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Policy Enforcement Manager by F5

Version Range Affected
From 14.1.0 (inclusive)
To 14.1.4 (exclusive)
cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Domain Name System by F5

Version Range Affected
From 12.1.0 (inclusive)
To 12.1.5.3 (exclusive)
cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Application Acceleration Manager by F5

Version Range Affected
From 14.1.0 (inclusive)
To 14.1.4 (exclusive)
cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Application Security Manager by F5

Version Range Affected
From 16.0.0 (inclusive)
To 16.0.1.1 (exclusive)
cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Fraud Protection Service by F5

Version Range Affected
From 16.0.0 (inclusive)
To 16.0.1.1 (exclusive)
cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Policy Enforcement Manager by F5

Version Range Affected
From 16.0.0 (inclusive)
To 16.0.1.1 (exclusive)
cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Local Traffic Manager by F5

Version Range Affected
From 15.1.0 (inclusive)
To 15.1.2.1 (exclusive)
cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Domain Name System by F5

Version Range Affected
From 16.0.0 (inclusive)
To 16.0.1.1 (exclusive)
cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Ddos Hybrid Defender by F5

Version Range Affected
From 12.1.0 (inclusive)
To 12.1.5.3 (exclusive)
cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Application Acceleration Manager by F5

Version Range Affected
From 12.1.0 (inclusive)
To 12.1.5.3 (exclusive)
cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Application Security Manager by F5

Version Range Affected
From 14.1.0 (inclusive)
To 14.1.4 (exclusive)
cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Access Policy Manager by F5

Version Range Affected
From 13.1.0 (inclusive)
To 13.1.3.6 (exclusive)
cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Local Traffic Manager by F5

Version Range Affected
From 13.1.0 (inclusive)
To 13.1.3.6 (exclusive)
cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Fraud Protection Service by F5

Version Range Affected
From 12.1.0 (inclusive)
To 12.1.5.3 (exclusive)
cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Access Policy Manager by F5

Version Range Affected
From 16.0.0 (inclusive)
To 16.0.1.1 (exclusive)
cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Application Security Manager by F5

Version Range Affected
From 12.1.0 (inclusive)
To 12.1.5.3 (exclusive)
cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Ddos Hybrid Defender by F5

Version Range Affected
From 14.1.0 (inclusive)
To 14.1.4 (exclusive)
cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Local Traffic Manager by F5

Version Range Affected
From 16.0.0 (inclusive)
To 16.0.1.1 (exclusive)
cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Analytics by F5

Version Range Affected
From 15.1.0 (inclusive)
To 15.1.2.1 (exclusive)
cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Global Traffic Manager by F5

Version Range Affected
From 12.1.0 (inclusive)
To 12.1.5.3 (exclusive)
cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Fraud Protection Service by F5

Version Range Affected
From 14.1.0 (inclusive)
To 14.1.4 (exclusive)
cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Global Traffic Manager by F5

Version Range Affected
From 16.0.0 (inclusive)
To 16.0.1.1 (exclusive)
cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Analytics by F5

Version Range Affected
From 13.1.0 (inclusive)
To 13.1.3.6 (exclusive)
cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Ssl Orchestrator by F5

Version Range Affected
From 14.1.0 (inclusive)
To 14.1.4 (exclusive)
cpe:2.3:a:f5:ssl_orchestrator:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Policy Enforcement Manager by F5

Version Range Affected
From 12.1.0 (inclusive)
To 12.1.5.3 (exclusive)
cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Domain Name System by F5

Version Range Affected
From 15.1.0 (inclusive)
To 15.1.2.1 (exclusive)
cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Fraud Protection Service by F5

Version Range Affected
From 13.1.0 (inclusive)
To 13.1.3.6 (exclusive)
cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Advanced Web Application Firewall by F5

Version Range Affected
From 14.1.0 (inclusive)
To 14.1.4 (exclusive)
cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Advanced Firewall Manager by F5

Version Range Affected
From 14.1.0 (inclusive)
To 14.1.4 (exclusive)
cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Application Acceleration Manager by F5

Version Range Affected
From 13.1.0 (inclusive)
To 13.1.3.6 (exclusive)
cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Advanced Firewall Manager by F5

Version Range Affected
From 15.1.0 (inclusive)
To 15.1.2.1 (exclusive)
cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Analytics by F5

Version Range Affected
From 14.1.0 (inclusive)
To 14.1.4 (exclusive)
cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Advanced Firewall Manager by F5

Version Range Affected
From 12.1.0 (inclusive)
To 12.1.5.3 (exclusive)
cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Domain Name System by F5

Version Range Affected
From 14.1.0 (inclusive)
To 14.1.4 (exclusive)
cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Access Policy Manager by F5

Version Range Affected
From 14.1.0 (inclusive)
To 14.1.4 (exclusive)
cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Big-Ip Advanced Firewall Manager by F5

Version Range Affected
From 13.1.0 (inclusive)
To 13.1.3.6 (exclusive)
cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021…
https://support.f5.com/csp/article/K56715231
https://support.f5.com/csp/article/K56715231