CVE-2025-61951

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

8.7
High

Description

Undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate.  This issue may occur when a Datagram Transport Layer Security (DTLS) 1.2 virtual server is enabled with a Server SSL profile that is configured with a certificate, key, and the SSL Sign Hash set to ANY, and the backend server is enabled with DTLS 1.2 and client authentication.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Product(s) Impacted

Vendor Product Versions
F5
  • Traffic Management Microkernel
  • Big Ip
  • *
  • *

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-125
Out-of-bounds Read
The product reads data past the end, or before the beginning, of the intended buffer.

*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 traffic_management_microkernel / / / / / / / /
a f5 big_ip / / / / / / / /

References

https://my.f5.com/manage/s/article/K000151309

Tags

CWE-125
f5sirt@f5.com
2025-10-15
CVE-2025-61951

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.