September 20, 2026

CVE Watchtower

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CVE-2026-90778NVD

Description

SIPp through 3.7.7 contains a buffer overflow vulnerability in get_peer_tag() function when processing SIP To headers with tag parameters of 2049 bytes or more. Unauthenticated remote attackers can send crafted SIP messages with oversized tag parameters to overflow the static buffer and crash the process.
Severity Level
HIGH (7.5)
Published Date
13/09/2026
Last Modified
14/09/2026
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