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.
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Remediation
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References
History
Thu, 05 Nov 2026 19:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | FreeSWITCH: Pre-authentication heap buffer overflow in core XML empty-entity decoding | |
| Weaknesses | CWE-122 CWE-131 CWE-191 |
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| Metrics |
cvssV3_1
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Subscriptions
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-11-05T19:39:44.929Z
Reserved: 2026-10-26T21:53:35.167Z
Link: CVE-2026-116788
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Status : Received
Published: 2026-11-05T20:17:46.240
Modified: 2026-11-05T20:17:46.240
Link: CVE-2026-116788
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OpenCVE Enrichment
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