CVE-2026-25994— PJSIP has a heap buffer overflow in ICE with long username
Quick assessment
Affected
pjsip pjproject
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.
PJSIP是pjsip开源的一个免费和开源的多媒体通信库，用C语言编写，实现基于标准的协议，如SIP, SDP, RTP, STUN, TURN，和ICE。 PJSIP 2.16及之前版本存在安全漏洞，该漏洞源于处理具有过长用户名的凭据时存在缓冲区溢出。
Public Exploits 1
ExploitDB · 1
EDB-52561 [webapps]
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-25994
Vulnerability Information
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Vulnerability Title
PJSIP has a heap buffer overflow in ICE with long username
Source: CVE Program / CVE List V5
Vulnerability Description
PJSIP is a free and open source multimedia communication library written in C. In 2.16 and earlier, a buffer overflow vulnerability exists in PJNATH ICE Session when processing credentials with excessively long usernames.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: CVE Program / CVE List V5
Vulnerability Title
PJSIP 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
PJSIP是pjsip开源的一个免费和开源的多媒体通信库，用C语言编写，实现基于标准的协议，如SIP, SDP, RTP, STUN, TURN，和ICE。 PJSIP 2.16及之前版本存在安全漏洞，该漏洞源于处理具有过长用户名的凭据时存在缓冲区溢出。
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)
Affected Products
II. Public POCs for CVE-2026-25994
| # | POC Description | Source Link | Shenlong Link |
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IV. Related Vulnerabilities
Same product: pjproject
-
CVE-2026-84975
PJSIP: TLS server identity (hostname) verification bypass vi -
CVE-2026-77396
PJSIP: Heap buffer overflow in the AVI parser -
CVE-2026-57166
PJSIP: Pre-authentication overflow in the telnet CLI error -
CVE-2026-57165
PJSIP: Pre-authentication overflow in the telnet CLI history -
CVE-2026-57164
PJSIP: Heap overflow in the HTTP client
Same vendor: pjsip
-
CVE-2026-84975
PJSIP: TLS server identity (hostname) verification bypass vi -
CVE-2026-77396
PJSIP: Heap buffer overflow in the AVI parser -
CVE-2026-57166
PJSIP: Pre-authentication overflow in the telnet CLI error -
CVE-2026-57165
PJSIP: Pre-authentication overflow in the telnet CLI history -
CVE-2026-57164
PJSIP: Heap overflow in the HTTP client
Same weakness: CWE-120
-
CVE-2026-94587
Brocade Fabric OS堆溢出漏洞影响9.2.2d及10.0.0-10.0.0a1 -
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Brocade Fabric OS 10.0.1前版本FSPF内存溢出漏洞 -
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GPAC DASH Client dash_client.c gf_dash_resolve_url buffer ov -
CVE-2026-81433
Fireware OS Pre-Authentication Stack Buffer Overflow in fing -
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ZoneMinder before 1.38.4 Buffer Overflow via HTTP Camera Res
V. Comments for CVE-2026-25994
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