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CVE-2026-116788 Details

Description

FreeSWITCH is an open-source software telecommunications platform. Before version 1.11.2, an integer underflow in switch_xml_decode() can cause an undersized heap allocation when an XML document declares an entity with an empty replacement value. Subsequent copying overruns the allocated buffer. An unauthenticated attacker who can reach a SIP profile with presence management enabled and DTD processing permitted can trigger the vulnerability through a crafted SIP PUBLISH request. Exploitation can corrupt heap memory and terminate the FreeSWITCH process, interrupting all active calls. This vulnerability is fixed in version 1.11.2.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:8.2 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/signalwire/freeswitch/commit/587474a1584488f0c04201e6e61efe76aa5bda01	[email protected]
https://github.com/signalwire/freeswitch/releases/tag/v1.11.2	[email protected]
https://github.com/signalwire/freeswitch/security/advisories/GHSA-f73w-xph4-pjp3	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-122	Heap-based Buffer Overflow	[email protected]
CWE-131	Incorrect Calculation of Buffer Size	[email protected]
CWE-191	Integer Underflow (Wrap or Wraparound)	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

1 change record found show changes