CVE-2026-90779— SIPp through 3.7.7 Stack Buffer Overflow via createAuthHeader Algorithm Parameter
Quick assessment
Affected
SIPp sipp
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.
SIPp 3.7.7 及更早版本在 函数中处理 SIP 认证质询时，若认证质询中的算法参数过大，会触发栈缓冲区溢出漏洞。攻击者可通过恶意构造的 SIP 服务器发送特制的 401 或 407 认证质询，导致栈内存被破坏，从而引发客户端进程崩溃。
Possible ATT&CK Techniques 1 AI
T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2026-90779
Vulnerability Information
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Vulnerability Title
SIPp through 3.7.7 Stack Buffer Overflow via createAuthHeader Algorithm Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
SIPp through 3.7.7 contains a stack buffer overflow vulnerability in createAuthHeader() when processing SIP authentication challenges with oversized algorithm parameters. A malicious SIP server can send a crafted 401 or 407 challenge to corrupt the stack and crash the client process.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-90779
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Other References for CVE-2026-90779 (5)
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https://github.com/SIPp/sipp product
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https://github.com/SIPp/sipp/blob/v3.7.7/src/auth.cpp#L183-L192 technical-description
Same Patch Batch · SIPp · 2026-09-13 · 3 CVEs total
| CVE-2026-90780 | 7.5 HIGH | SIPp through 3.7.7 Buffer Overflow via Oversized SIP Header Content |
| CVE-2026-90778 | 7.5 HIGH | SIPp through 3.7.7 Buffer Overflow via SIP To Header Tag |
IV. Related Vulnerabilities
Same product: sipp
Same vendor: SIPp
Same weakness: CWE-121
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V. Comments for CVE-2026-90779
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