CVE-2023-51839: DeviceFarmer stf v3.6.6 suffers from Use of a Broken or Risky Cryptographic Algorithm.

This month

CRITICAL 9.1REMOTEDOWNGRADE

CVE-2023-51839 is a critical-severity flaw (CVSS 9.1) affecting smartphone test farm. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

DeviceFarmer stf v3.6.6 suffers from Use of a Broken or Risky Cryptographic Algorithm.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 69%)
CISA exploited list	No
Weakness	CWE-327
Published	2024-01-29
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: devicefarmer

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

Am I affected?

Timeline

2024-01-29 20:15 UTCPublished CVE record published
2026-06-17 06:41 UTCUpdated Record last modified

devicefarmer smartphone test farm DOWNGRADE

Affected: 3.6.6

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.6.6

1. Check installed version

apt-cache policy smartphone-test-farm || rpm -q smartphone-test-farm || smartphone-test-farm --version

2. No fixed release: DOWNGRADE to a release before 3.6.6 (Debian / Ubuntu)

apt-cache madison smartphone-test-farm sudo apt install smartphone-test-farm=<VERSION_BEFORE_3.6.6> sudo apt-mark hold smartphone-test-farm

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list smartphone-test-farm sudo dnf downgrade smartphone-test-farm-<VERSION_BEFORE_3.6.6> sudo dnf versionlock add smartphone-test-farm

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-2023-51839?

smartphone test farm: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-51839 being exploited?

CVE-2023-51839 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-2023-51839 affect?

CVE-2023-51839 affects smartphone test farm. Severity is critical (CVSS 9.1). DeviceFarmer stf v3.6.6 suffers from Use of a Broken or Risky Cryptographic Algorithm.

How urgent is CVE-2023-51839?

Priority 45/100. Critical severity; Remotely exploitable, no login, no user action

References

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