CVE-2026-106804 Kamailio - Buffer Overflow

Kamailio v6.1.3 and v6.1.4 contain a stack overflow caused by unchecked copying of the host field from SIP Via header in ims_qos_npn module, letting unauthenticated remote attackers cause denial of service via crafted REGISTER request.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Buffer Overflow
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2 November 2026
Updated
3 November 2026
Weakness
CWE-20

Vendor fix

Update to a version later than 6.1.4 or the latest available version.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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