What is CVE-2025-54809?

CVE-2025-54809 is a high-severity vulnerability in F5 Access, classified under Improper Certificate Validation. CVSS score: 7.4/10. Published 2025-08-13.

How severe is CVE-2025-54809?

High severity. CVSS v3 base score is 7.4 out of 10.

Is CVE-2025-54809 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in F5 Access

CVE-2025-54809

F5 Access for Android before version 3.1.2 which uses HTTPS does not verify the remote endpoint identity. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Vulnerability class: Improper Certificate Validation

EPSS: 0.001 (23.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.

Affected products

F5 Access — versions 3.1.0

Weakness classification (CWE)

CWE-295 — Improper Certificate Validation

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

my.f5.com/manage/s/article/K000152049 (vendor-advisory)

Frequently asked questions

What is CVE-2025-54809?: CVE-2025-54809 is a high-severity vulnerability in F5 Access, classified under Improper Certificate Validation. CVSS score: 7.4/10. Published 2025-08-13.
How severe is CVE-2025-54809?: High severity. CVSS v3 base score is 7.4 out of 10.
Is CVE-2025-54809 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.