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vuln-cve/data/2026/116xxx/CVE-2026-116567.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-116567",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-10-26T15:03:39.034Z",
"datePublished": "2026-11-05T19:23:25.422Z",
"dateUpdated": "2026-11-09T18:21:07.348Z"
},
"containers": {
"cna": {
"title": "FreeSWITCH: Pre-authentication stack buffer overflow in mod_rtmp control-message handling",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-121",
"lang": "en",
"description": "CWE-121: Stack-based Buffer Overflow",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
}
}
],
"references": [
{
"name": "https://github.com/signalwire/freeswitch/security/advisories/GHSA-hj6x-9653-p796",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/signalwire/freeswitch/security/advisories/GHSA-hj6x-9653-p796"
},
{
"name": "https://github.com/signalwire/freeswitch/commit/fc0db829b87d1a5a3043e355b4294c41851b13c6",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/signalwire/freeswitch/commit/fc0db829b87d1a5a3043e355b4294c41851b13c6"
},
{
"name": "https://github.com/signalwire/freeswitch/releases/tag/v1.11.2",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/signalwire/freeswitch/releases/tag/v1.11.2"
}
],
"affected": [
{
"vendor": "signalwire",
"product": "freeswitch",
"versions": [
{
"version": "< 1.11.2",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-11-05T19:23:25.422Z"
},
"descriptions": [
{
"lang": "en",
"value": "FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to 1.11.2, rtmp_handle_control() rendered an RTMP user-control message into a 200-byte stack buffer using an unbounded sprintf loop controlled by the wire message length. A body of roughly 70 bytes or more overflowed the stack before any RTMP login, because the handshake authenticates neither side. The flaw affects deployments that build and load mod_rtmp, which is disabled in the stock build and configuration but commonly exposes a listener on TCP port 1935 when enabled. One unauthenticated message can crash FreeSWITCH and end every active call; the constrained ASCII hex output has not yielded control-flow hijacking. This issue is fixed in version 1.11.2."
}
],
"source": {
"advisory": "GHSA-hj6x-9653-p796",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-11-09T18:19:36.625084Z",
"id": "CVE-2026-116567",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-11-09T18:21:07.348Z"
}
}
]
}
}