CVE-2014-3980: libfep 0.0.5 before 0.1.0 does not properly use UNIX domain sockets in the abstract namespace, which allows lo

Routine

MEDIUM 4.6DOWNGRADE

CVE-2014-3980 is a medium-severity flaw (CVSS 4.6) affecting libfep. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

libfep 0.0.5 before 0.1.0 does not properly use UNIX domain sockets in the abstract namespace, which allows local users to gain privileges via unspecified vectors.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	4.6 (Medium)
EPSS exploit chance	0.4% (top 69%)
CISA exploited list	No
Weakness	CWE-264
Published	2014-06-11
Last modified	2026-06-17

Publisher (CNA): Red Hat, Inc. · Vendor: daiki ueno

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

Am I affected?

Timeline

2014-06-11 14:55 UTCPublished CVE record published
2026-06-17 00:09 UTCUpdated Record last modified

daiki ueno libfep DOWNGRADE

Affected: 0.0.5 · 0.0.6 · 0.0.7 · 0.0.8 · 0.0.9

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.0.5

1. Check installed version

apt-cache policy libfep || rpm -q libfep || libfep --version

2. No fixed release: DOWNGRADE to a release before 0.0.5 (Debian / Ubuntu)

apt-cache madison libfep sudo apt install libfep=<VERSION_BEFORE_0.0.5> sudo apt-mark hold libfep

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

dnf --showduplicates list libfep sudo dnf downgrade libfep-<VERSION_BEFORE_0.0.5> sudo dnf versionlock add libfep

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-2014-3980?

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

Is CVE-2014-3980 being exploited?

CVE-2014-3980 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-2014-3980 affect?

CVE-2014-3980 affects libfep. Severity is medium (CVSS 4.6). libfep 0.0.5 before 0.1.0 does not properly use UNIX domain sockets in the abstract namespace, which allows local users to gain privileges via unspecified vectors.

How urgent is CVE-2014-3980?

Priority 24/100. No elevated risk signals yet.

References

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