CVE-2023-27992

KEV
Published: Giu 19, 2023 Last Modified: Ott 27, 2025
ExploitDB:
Other exploit source:
Google Dorks:
CRITICAL 9,8
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high

Description

AI Translation Available

The pre-authentication command injection vulnerability in the Zyxel NAS326 firmware versions prior to V5.21(AAZF.14)C0, NAS540 firmware versions prior to V5.21(AATB.11)C0, and NAS542 firmware versions prior to V5.21(ABAG.11)C0 could allow an unauthenticated attacker to execute some operating system (OS) commands remotely by sending a crafted HTTP request.

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
0,8401
Percentile
1,0th
Updated

EPSS Score Trend (Last 91 Days)

78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Stable
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Confidentiality Integrity Availability Non-Repudiation
Potential Impacts:
Execute Unauthorized Code Or Commands Dos: Crash, Exit, Or Restart Read Files Or Directories Modify Files Or Directories Read Application Data Modify Application Data Hide Activities
Applicable Platforms
Technologies: AI/ML, Not Technology-Specific, Web Server
Likelihood of Exploit: High
View CWE Details
Operating System

Nas326 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Nas326 Firmware
Version Range Affected
To 5.21\(aazf.14\)c0 (exclusive)
cpe:2.3:o:zyxel:nas326_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Nas542 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Nas542 Firmware
Version Range Affected
To 5.21\(abag.11\)c0 (exclusive)
cpe:2.3:o:zyxel:nas542_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Nas540 Firmware by Zyxel

Product Information
Vendor Zyxel
Product Nas540 Firmware
Version Range Affected
To 5.21\(aatb.11\)c0 (exclusive)
cpe:2.3:o:zyxel:nas540_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://www.cisa.gov/known-exploited-vulnerabilities-catalo…
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023…
https://www.zyxel.com/global/en/support/security-advisories…
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advi…
https://www.zyxel.com/global/en/support/security-advisories…
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advi…