CVE-2025-59781

Oct. 15, 2025, 2:15 p.m.

8.7
High

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.

Product(s) Impacted

Vendor Product Versions
F5
  • Big-ip
  • Big-ip Next Cnf
  • *
  • *

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-459
Incomplete Cleanup
The product does not properly "clean up" and remove temporary or supporting resources after they have been used.

*CPE(s)

Affected systems and software identified for this CVE.

Type Vendor Product Version Update Edition Language Software Edition Target Software Target Hardware Other Information
a f5 big-ip / / / / / / / /
a f5 big-ip_next_cnf / / / / / / / /

References

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

Tags

f5sirt@f5.com
CWE-459
2025-10-15
CVE-2025-59781

CVSS Score

8.7 / 10

CVSS Data - 4.0

  • Attack Vector: NETWORK
  • Attack Complexity: LOW
  • Attack Requirements: NONE
  • Privileges Required: NONE
  • User Interaction: NONE
  • Scope:
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: HIGH
  • Exploit Maturity: NOT_DEFINED

    • CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

    View Vector String

Timeline

Published: Oct. 15, 2025, 2:15 p.m.
Last Modified: Oct. 15, 2025, 2:15 p.m.

Status : Received

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

f5sirt@f5.com

Linked Attack Reports

F5 BIG-IP Source Code Leak Tied to State-Linked Campaigns Using BRICKSTORM Backdoor

A China-linked threat cluster, UNC5221, is actively targeting organizations using F5 BIG-IP following a confirmed breach of F5's internal development data. The stolen data includes portions of BIG-IP source code and vulnerability information, raising the risk of rapid 0-day discovery and weaponizat…
brickstorm
2025-10-24
f5 big-ip
Published: October 24, 2025
Linked vulnerabilities : CVE-2025-61882 (CVSS 9.8), CVE-2025-41430 (CVSS 8.7), CVE-2025-46706 (CVSS 8.7), CVE-2025-48008 (CVSS 8.7), CVE-2025-53474 (CVSS 8.7), CVE-2025-53521 (CVSS 8.7), CVE-2025-53856 (CVSS 8.7), CVE-2025-53868 (CVSS 8.5), CVE-2025-54479 (CVSS 8.7), CVE-2025-54854 (CVSS 8.7), CVE-2025-54858 (CVSS 8.7), CVE-2025-55036 (CVSS 8.7), CVE-2025-55669 (CVSS 8.7), CVE-2025-58096 (CVSS 8.2), CVE-2025-58120 (CVSS 8.7), CVE-2025-59478 (CVSS 8.7), CVE-2025-59781 (CVSS 8.7), CVE-2025-60016 (CVSS 8.7), CVE-2025-61938 (CVSS 8.7), CVE-2025-61951 (CVSS 8.7), CVE-2025-61955 (CVSS 8.5), CVE-2025-61960 (CVSS 8.7), CVE-2025-61974 (CVSS 8.7), CVE-2025-57780 (CVSS 8.5), CVE-2025-58071 (CVSS 8.7), CVE-2025-61935 (CVSS 8.7), CVE-2025-61990 (CVSS 8.7)
Downloadable IOCs: 3

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.