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CVE-2026-90780— SIPp through 3.7.7 Buffer Overflow via Oversized SIP Header Content

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 及更早版本中，src/sip_parser.cpp 文件中的 get_header() 函数存在缓冲区溢出漏洞。当处理头部内容超过 20,490 字节的 SIP 消息时，未认证的远程攻击者可以发送带有超大头部的特制 SIP 消息，从而溢出静态缓冲区并导致进程崩溃。

CVSS 7.5 · High
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I. Basic Information for CVE-2026-90780

Vulnerability Information
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Vulnerability Title
SIPp through 3.7.7 Buffer Overflow via Oversized SIP Header Content
Source: CVE Program / CVE List V5
Vulnerability Description
SIPp through 3.7.7 contains a buffer overflow vulnerability in the get_header() function in src/sip_parser.cpp when processing SIP messages with header content exceeding 20,490 bytes. Unauthenticated remote attackers can send crafted SIP messages with oversized headers to overflow the static buffer and crash the 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
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

Affected Products

Vendor Product Affected Versions CPE Subscribe
SIPp sipp 0 ~ 3.7.7 -

II. Public POCs for CVE-2026-90780

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III. Intelligence Information for CVE-2026-90780

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Other References for CVE-2026-90780 (5)

Same Patch Batch · SIPp · 2026-09-13 · 3 CVEs total

CVE-2026-90778 7.5 HIGH SIPp through 3.7.7 Buffer Overflow via SIP To Header Tag
CVE-2026-90779 7.5 HIGH SIPp through 3.7.7 Stack Buffer Overflow via createAuthHeader Algorithm Parameter

IV. Related Vulnerabilities

Same product: sipp
Same vendor: SIPp
Same weakness: CWE-120

V. Comments for CVE-2026-90780

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