A stack-based buffer overflow exists in Kamailio v6.1.3 and v6.1.4 in the ims_qos_npn module. The w_rx_aar_register() function copies the attacker-controlled host field from the SIP `Via` header into a fixed 46-byte stack buffer without validating its length. An unauthenticated remote attacker can trigger the vulnerability with a crafted SIP `REGISTER` request, causing stack corruption and termination of the affected Kamailio instance, resulting in denial of service.

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Mon, 02 Nov 2026 17:15:00 +0000

Type Values Removed Values Added
Description A stack-based buffer overflow exists in Kamailio v6.1.3 and v6.1.4 in the ims_qos_npn module. The w_rx_aar_register() function copies the attacker-controlled host field from the SIP `Via` header into a fixed 46-byte stack buffer without validating its length. An unauthenticated remote attacker can trigger the vulnerability with a crafted SIP `REGISTER` request, causing stack corruption and termination of the affected Kamailio instance, resulting in denial of service.
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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-11-02T16:59:50.640Z

Reserved: 2026-10-07T00:00:00.000Z

Link: CVE-2026-106804

cve-icon Vulnrichment

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cve-icon NVD

Status : Received

Published: 2026-11-02T17:17:33.453

Modified: 2026-11-02T17:17:33.453

Link: CVE-2026-106804

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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