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CVE-2026-90558— sngrep through 1.8.4 Stack Buffer Overflow via SIP Headers

Quick assessment

Affected
irontec sngrep
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.

sngrep 1.8.4 及更早版本在 SIP 属性格式化例程中存在堆栈缓冲区溢出漏洞，当头部值超过 255 字节的缓冲区限制时触发。攻击者可以构造包含超大 Call-ID、X-Call-ID 或其他头部字段的恶意 SIP 数据包，以在数据包解析和渲染过程中导致程序崩溃或执行任意代码。

CVSS 9.8 · Critical

Possible ATT&CK Techniques 2 AI

T1204.006 T1204.001 · Malicious Link

Affected Version Matrix 1

VendorProduct Version RangeStatus
irontec sngrep ≤ 1.8.4 affected
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I. Basic Information for CVE-2026-90558

Vulnerability Information
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Vulnerability Title
sngrep through 1.8.4 Stack Buffer Overflow via SIP Headers
Source: CVE Program / CVE List V5
Vulnerability Description
sngrep through 1.8.4 contains stack buffer overflow vulnerabilities in SIP attribute formatting routines when header values exceed the 255-byte buffer limit. Attackers can craft malicious SIP packets with oversized Call-ID, X-Call-ID, or other header fields to overflow stack buffers and cause crashes or execute arbitrary code during packet parsing and rendering.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
irontec sngrep 0 ~ 1.8.4 -

II. Public POCs for CVE-2026-90558

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III. Intelligence Information for CVE-2026-90558

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Patches & Fixes for CVE-2026-90558 (1)

Vendor Advisories for CVE-2026-90558 (1)

Proof of Concept for CVE-2026-90558 (1)

Other References for CVE-2026-90558 (2)

IV. Related Vulnerabilities

Same product: sngrep
Same vendor: irontec
Same weakness: CWE-121

V. Comments for CVE-2026-90558

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