Cyber Resilience

CVE-2025-61951

High

Published: 15 October 2025

Published
15 October 2025
Modified
21 October 2025
KEV Added
Patch
CVSS Score v4 8.7 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
EPSS Score 0.0007 20.7th percentile
Risk Priority 17 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-61951 is a high-severity Out-of-bounds Read (CWE-125) vulnerability in F5 Big-Ip Access Policy Manager. Its CVSS base score is 8.7 (High).

Operationally, ranked at the 20.7th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

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…

more

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.

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

f5
big-ip access policy manager
17.5.0 · 16.1.0 — 16.1.6.1 · 17.1.0 — 17.1.3
f5
big-ip advanced firewall manager
17.5.0 · 16.1.0 — 16.1.6.1 · 17.1.0 — 17.1.3
f5
big-ip advanced web application firewall
17.5.0 · 16.1.0 — 16.1.6.1 · 17.1.0 — 17.1.3
f5
big-ip analytics
17.5.0 · 16.1.0 — 16.1.6.1 · 17.1.0 — 17.1.3
f5
big-ip application acceleration manager
17.5.0 · 16.1.0 — 16.1.6.1 · 17.1.0 — 17.1.3
f5
big-ip application security manager
17.5.0 · 16.1.0 — 16.1.6.1 · 17.1.0 — 17.1.3
f5
big-ip application visibility and reporting
17.5.0 · 16.1.0 — 16.1.6.1 · 17.1.0 — 17.1.3
f5
big-ip automation toolchain
17.5.0 · 16.1.0 — 16.1.6.1 · 17.1.0 — 17.1.3
f5
big-ip carrier-grade nat
17.5.0 · 16.1.0 — 16.1.6.1 · 17.1.0 — 17.1.3
f5
big-ip container ingress services
17.5.0 · 16.1.0 — 16.1.6.1 · 17.1.0 — 17.1.3
+11 more product configuration(s) — see NVD for full list

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References