CVE-2025-59781

HIGH

F5 BIG-IP - Denial of Service via DNS Cache Memory Exhaustion

Title source: llm
STIX 2.1

Description

When DNS cache is configured on a BIG-IP or BIG-IP Next CNF virtual server, undisclosed DNS queries can cause an increase in memory resource utilization.   Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

References (1)

Core 1
Core References
Vendor Advisory vendor-advisory
https://my.f5.com/manage/s/article/K000150637

Scores

CVSS v3 7.5
EPSS 0.0032
EPSS Percentile 23.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-459
Status published
Products (22)
f5/big-ip_access_policy_manager 15.1.0 - 15.1.10.8
f5/big-ip_advanced_firewall_manager 15.1.0 - 15.1.10.8
f5/big-ip_advanced_web_application_firewall 15.1.0 - 15.1.10.8
f5/big-ip_analytics 15.1.0 - 15.1.10.8
f5/big-ip_application_acceleration_manager 15.1.0 - 15.1.10.8
f5/big-ip_application_security_manager 15.1.0 - 15.1.10.8
f5/big-ip_application_visibility_and_reporting 15.1.0 - 15.1.10.8
f5/big-ip_automation_toolchain 15.1.0 - 15.1.10.8
f5/big-ip_carrier-grade_nat 15.1.0 - 15.1.10.8
f5/big-ip_container_ingress_services 15.1.0 - 15.1.10.8
... and 12 more
Published Oct 15, 2025
Tracked Since Feb 18, 2026