Incomplete cleanup in BIG-IP Next CNF and BIG-IP - CVE-2025-59781

Vulnerability identifier: #VU117359

CSH Severity: Medium

CVSS v4.0: 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:U/U:Green

CVE-ID: CVE-2025-59781

CWE-ID: CWE-459

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vendor: F5 Networks

Affected software:
BIG-IP Next CNF
BIG-IP

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

The vulnerability exists due to incomplete cleanup when handling DNS cache. A remote attacker can send specially crafted DNS packets to the system and perform a denial of service (DoS) attack.

Install updates from vendor's website.

• https://my.f5.com/manage/s/article/K000150637