CVE-2025-54809: F5 Access for Android before version 3.1.2 which uses HTTPS does not verify the remote endpoint identity.

Routine

HIGH 7.4REMOTEUPGRADE

CVE-2025-54809 is a high-severity flaw (CVSS 7.4) affecting f5 access. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.4 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 84%)
CISA exploited list	No
Weakness	CWE-295
Published	2025-08-13
Last modified	2026-06-17

Publisher (CNA): F5 Networks · Vendor: f5

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-08-13 15:15 UTCPublished CVE record published
2026-06-17 09:40 UTCUpdated Record last modified

f5 f5 access UPGRADE

Affected: >= 3.1.0 and < 3.1.2

Fixed in: 3.1.2

Safe to downgrade to: a release before 3.1.0

1. Check installed version

apt-cache policy f5-access || rpm -q f5-access || f5-access --version

2. UPGRADE to 3.1.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade f5-access

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade f5-access

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 3.1.0 (Debian / Ubuntu)

apt-cache madison f5-access sudo apt install f5-access=<VERSION_BEFORE_3.1.0> sudo apt-mark hold f5-access

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list f5-access sudo dnf downgrade f5-access-<VERSION_BEFORE_3.1.0> sudo dnf versionlock add f5-access

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-54809?

f5 access: upgrade to 3.1.2. Exact commands for each OS are on this page.

Is CVE-2025-54809 being exploited?

CVE-2025-54809 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-54809 affect?

CVE-2025-54809 affects f5 access. Severity is high (CVSS 7.4). 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.

How urgent is CVE-2025-54809?

Priority 35/100. High severity; Remotely exploitable, no login, no user action

Software pages

Android vulnerabilities · F5 BIG-IP vulnerabilities

References

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