CVE-2026-110679

OpenSIPS rtpproxy rtpproxy_answer out-of-bounds

State: Published
Severity: 6.9 Medium
Published: Oct 14, 2026
Updated: Oct 15, 2026
Reserved: Oct 14, 2026

Description

A vulnerability was determined in OpenSIPS up to 3.6.8/4.0.1. The impacted element is the function rtpproxy_offer/rtpproxy_answer of the component rtpproxy. This manipulation causes out-of-bounds read. The attack may be initiated remotely. Upgrading to version 3.6.9 and 4.0.2 is sufficient to resolve this issue. It is advisable to upgrade the affected component.

Scores

CVSS	Score	Vector	Source
4.0	6.9 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X	VulDB
3.1	7.3 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C	VulDB
3.0	7.3 High	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C	VulDB
2.0	7.5 High	AV:N/AC:L/Au:N/C:P/I:P/A:P/E:ND/RL:OF/RC:C	VulDB

Weaknesses

CWE-125 Out-of-Bounds Read
CWE-119 Memory Corruption

Affected Products

Product	Versions
OpenSIPSn/a	3.6.0Affected 3.6.1Affected 3.6.2Affected 3.6.3Affected 3.6.4Affected 3.6.5Affected 3.6.6Affected 3.6.7Affected 3.6.8Affected 4.0.0Affected 4.0.1Affected 3.6.9Not affected 4.0.2Not affected

References

VDB-419834 | OpenSIPS rtpproxy rtpproxy_answer out-of-boundsvdb-entrytechnical-description
VDB-419834 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
CVE-2026-110679 | CVE Analysis and Reportthird-party-advisory
Submit #1003897 | OpenSIPS >= 4.0.0, < 4.0.2 and >= 3.6.0, < 3.6.9 rtpproxy: Unauthenticated out-of-bounds read SIP Call-ID din dtmthird-party-advisory
https://github.com/OpenSIPS/opensips/security/advisories/GHSA-qv9x-v8jq-434wrelated
https://github.com/OpenSIPS/opensips/releases/tag/4.0.2patch
https://github.com/OpenSIPS/opensips/product

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