CVE-2025-53521NVD

Vulnerability Summary

When a BIG-IP APM Access Policy is configured on a virtual server, undisclosed traffic can cause TMM to terminate.

Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Severity Level

HIGH(8.7)

Published Date

Oct 15, 2025

Last Modified

Mar 27, 2026

Exploitation Status

ACTIVE

EPSS Score (30-Day)

7.45%Probability

Root Weakness (CWE)

CWE-770: Unknown/Unlisted Weakness ↗

Refer to the official MITRE database for detailed architectural specifications regarding this weakness.

CVSS v4.0 Base Metrics — Score 8.7 (HIGH)

Attack VectorNetwork

Attack ComplexityLow

Attack RequirementsNone

Privileges RequiredNone

User InteractionNone

Confidentiality (Vulnerable System)None

Integrity (Vulnerable System)None

Availability (Vulnerable System)High

Confidentiality (Subsequent System)None

Integrity (Subsequent System)None

Availability (Subsequent System)None

CVSS v3.1 Base Metrics — Score 7.5 (HIGH)

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

ConfidentialityNone

IntegrityNone

AvailabilityHigh

Affected & Patched Versions

Affected Versions

Not provided by NVD for this CVE.

Patched Versions

Not provided by NVD for this CVE.

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