#VU109620 Reachable assertion in ISC BIND - CVE-2025-40775

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Main Vulnerability Database Vulnerabilities #VU109620

#VU109620 Reachable assertion in ISC BIND - CVE-2025-40775

Published: May 21, 2025 / Updated: May 23, 2025


Vulnerability identifier: #VU109620
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Green
CVE-ID: CVE-2025-40775
CWE-ID: CWE-617
Exploitation vector: Remote access
Exploit availability: Public exploit is available
Vulnerable software:
ISC BIND
Software vendor:
ISC

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a reachable assertion when handling transaction signature (TSIG) in incoming DNS messages. A remote attacker can send specially crafted DNS messages to the affected server and perform a denial of service (DoS) attack.


Remediation

Install updates from vendor's website.

External links