Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-39864— Kamailio Auth: Processing Vulnerability For Additional Authenticated User Identity Checks

Quick assessment

Affected
kamailio kamailio
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Kamailio是Kamailio开源的一个 SIP 信令服务器的开源实现。 Kamailio 6.0.5之前版本和5.8.7之前版本存在缓冲区错误漏洞，该漏洞源于越界读取，可能导致拒绝服务。

CVSS 4.4 · Medium EPSS 0.30% · P22
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-39864

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Kamailio Auth: Processing Vulnerability For Additional Authenticated User Identity Checks
Source: CVE Program / CVE List V5
Vulnerability Description
Kamailio is an open source implementation of a SIP Signaling Server. Prior to 6.0.5 and 5.8.7, an out-of-bounds read in the auth module of Kamailio (formerly OpenSER and SER) allows remote attackers to cause a denial of service (process crash) via a specially crafted SIP packet if a successful user authentication without a database backend is followed by additional user identity checks. This vulnerability is fixed in 6.0.5 and 5.8.7.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
Kamailio 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Kamailio是Kamailio开源的一个 SIP 信令服务器的开源实现。 Kamailio 6.0.5之前版本和5.8.7之前版本存在缓冲区错误漏洞，该漏洞源于越界读取，可能导致拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

II. Public POCs for CVE-2026-39864

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-39864

请登录查看更多情报信息。

IV. Related Vulnerabilities

Same product: kamailio
Same vendor: kamailio
Same weakness: CWE-125

V. Comments for CVE-2026-39864

No comments yet

Leave a comment