Cyber Resilience

CVE-2021-23052

Medium

Published: 14 September 2021

Published
14 September 2021
Modified
21 November 2024
KEV Added
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Patch
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CVSS Score v3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS Score 0.0022 44.6th percentile
Risk Priority 12 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-23052 is a medium-severity Open Redirect (CWE-601) vulnerability in F5 Big-Ip Access Policy Manager. Its CVSS base score is 6.1 (Medium).

Operationally, ranked at the 44.6th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

On version 14.1.x before 14.1.4.4 and all versions of 13.1.x, an open redirect vulnerability exists on virtual servers enabled with a BIG-IP APM access policy. This vulnerability allows an unauthenticated malicious user to build an open redirect URI. Note: Software…

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

CWE(s)
CWE-601

Related Threats

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

Affected Assets

f5
big-ip access policy manager
13.1.0 — 13.1.4 · 14.1.0 — 14.1.4.4

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

AT-2 Literacy Training and Awareness
addresses: CWE-601

Security awareness includes verifying URLs and avoiding untrusted redirects that lead to malicious sites.

SI-10 Information Input Validation
addresses: CWE-601

Validates redirect targets and URLs to ensure they conform to allowed destinations.

References