September 20, 2026

CVE Watchtower

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CVE-2026-90780NVD

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.
Severity Level
HIGH (7.5)
Published Date
13/09/2026
Last Modified
20/09/2026
Exploitation Status
????
EPSS Score
0.63% (percentile 48.9%)

CVSS Base Metrics

CVSS v3 (3.1)
HIGH 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4 (4.0)
HIGH 8.7
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Weaknesses (CWE)

CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Affected & Patched Versions

ProductAffected VersionsPatched Version
SIPp sipp0 - <= 3.7.7N/A
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📧Email Delivery — Threat intel straight to your inbox.
♾️Unlimited Vendors — Track your entire stack.
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⚙️Custom EPSS — Filter noise, focus on risk.
💬Webhooks — Slack & Teams integration.
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References