MEDIUM 5.3 NVD
CVE-2026-58218
A flaw was found in Samba's internal DNS server where unauthenticated TKEY registration requests were added to the TKEY name cache before being rejected. A remo
A flaw was found in Samba's internal DNS server where unauthenticated TKEY registration requests were added to the TKEY name cache before being rejected. A remote, unauthenticated attacker can exploit this behavior by sending a large number of TKEY requests with arbitrary names, exhausting the cache and evicting legitimate TKEY entries. This can prevent legitimate TSIG authentication for signed DNS queries, resulting in a denial of service.
References
- https://access.redhat.com/security/cve/CVE-2026-58218
- https://bugzilla.redhat.com/show_bug.cgi?id=2502728
- https://bugzilla.samba.org/show_bug.cgi?id=16115
- https://www.samba.org/samba/security/CVE-2026-58218.html
This medium severity vulnerability with a CVSS score of 5.3 was published on 2026-07-30 via NVD.
vulnfeed aggregates 9166 vulnerabilities from NVD, CISA KEV,
Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.