CVE-2025-59781
BIG-IP DNS cache vulnerability
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-459 |
| Vendor | f5 |
| Product | big-ip |
| Published | Oct 15, 2025 |
| Last Updated | Feb 26, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
F5 / BIG-IP
17.1.0 < 17.1.2.2 16.1.0 < 16.1.6 15.1.0 < 15.1.10.8
F5 / BIG-IP Next CNF
1.1.0 < *
Credits
F5