CVE-2025-54809: f5 f5_access Improper Certificate Validation
CVSS: 8.8v4.0HighAnalyzed
Published 13-08-2025Last modified 13-08-2025
Vulnerability summary
CVE-2025-54809 is a high (CVSS 8.8) Improper Certificate Validation vulnerability in f5 f5_access. EPSS estimates a 0.25% chance of exploitation in the next 30 days, higher than 15.3% of scored vulnerabilities.
CVSS score
8.8/10
010
High · v4.0 (CVE.org)EPSS score
0.25%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 13-08-2025PublishedVulnerability first disclosed.
- 13-08-2025Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
4 scores · 2 sources · 2 versionsHigh 8.8Preferred score · CVE.org (CNA)
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:NSourcesAll 2 agree
- NVDNIST8.8HighCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/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
High 7.4Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:NSourcesAll 2 agree
- NVDNIST7.4HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS trend
Probability
0.25%
Chance of exploitation in the next 30 days
Percentile
15%
Versus all other CVEs
30-day change
0.00 pp
From 0.25% on 18-09-2026
18-09-202618-10-2026
EPSS score0.25%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
F51 product
- f5_access≥ 3.1.0, < 3.1.2
1 vendor · 1 product
References
1 links- my.f5.com/manage/s/article/K000152049Vendor Advisory