CVE-2026-39863

Published: Apr 08, 2026 Last Modified: Apr 15, 2026
ExploitDB:
Other exploit source:
Google Dorks:
HIGH 7,5
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high

Description

AI Translation Available

Kamailio is an open source implementation of a SIP Signaling Server. Prior to 6.1.1, 6.0.6, and 5.8.8, an out-of-bounds access in the core of Kamailio (formerly OpenSER and SER) allows remote attackers to cause a denial of service (process crash) via a specially crafted data packet sent over TCP. The issue impacts Kamailio instances having TCP or TLS listeners. This vulnerability is fixed in 5.1.1, 6.0.6, and 5.8.8.

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
0,0011
Percentile
0,3th
Updated

EPSS Score Trend (Last 8 Days)

119

Improper Restriction of Operations within the Bounds of a Memory Buffer

Stable
Abstraction: Class Structure: Simple
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
Likelihood of Exploit: High
View CWE Details
Application

Kamailio by Kamailio

Product Information
Vendor Kamailio
Product Kamailio
Version Range Affected
To 5.8.8 (exclusive)
cpe:2.3:a:kamailio:kamailio:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Kamailio by Kamailio

Product Information
Vendor Kamailio
Product Kamailio
Version 6.1.0
cpe:2.3:a:kamailio:kamailio:6.1.0:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Kamailio by Kamailio

Product Information
Vendor Kamailio
Product Kamailio
Version Range Affected
From 6.0.0 (inclusive)
To 6.0.6 (exclusive)
cpe:2.3:a:kamailio:kamailio:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://github.com/kamailio/kamailio/security/advisories/GH…
https://github.com/kamailio/kamailio/security/advisories/GHSA-2wj4-f825-2h2f