#VU124614 Improper Check or Handling of Exceptional Conditions in ISC BIND - CVE-2026-3119
Published: March 25, 2026
Vulnerability identifier: #VU124614
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-3119
CWE-ID: CWE-703
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
ISC BIND
ISC BIND
Software vendor:
ISC
ISC
Description
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to improper handling of TKEY records in the DNS query processing component when processing a signed query containing a TKEY record. A remote user can send a specially crafted, correctly signed query containing a TKEY record to cause named to terminate unexpectedly.
Successful exploitation requires that the attacker possesses a valid TSIG key configured in the target's named configuration. Both authoritative servers and resolvers are affected.
Remediation
Install security update from vendor's website.