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CVE-2026-90778

SIPp through 3.7.7 Buffer Overflow via SIP To Header Tag

CVSS 4.0 8.7 HIGHCVSS 3.1 7.5 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-90778

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-90778

Published

sipp

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "SIPp",
                    "product": "sipp",
                    "defaultStatus": "unaffected",
                    "versions": [
                        {
                            "version": "0",
                            "status": "affected",
                            "versionType": "semver",
                            "lessThanOrEqual": "3.7.7"
                        }
                    ],
                    "repo": "https://github.com/SIPp/sipp"
                }

Original source record · Cite this exact observation · Complete original publisher JSON