CVE-2025-59781 - CVE House
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Status published High CVE-2025-59781

BIG-IP DNS cache vulnerability

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • F5

References

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CVE-2025-61960
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CVE-2025-61958
BIG-IP TMSH vulnerability
High 8.5
CVE-2025-61955
F5OS vulnerability
High 8.5

Affected Vendor

Affected Software

BIG-IP, BIG-IP Next CNF
Vulnerable Versions:
17.5.0, 17.1.0, 16.1.0, 15.1.0, 2.0.0, 1.1.0

Timeline

Official Publish: October 15th, 2025
Last Modified: February 26th, 2026
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)

CWE-459

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.