CVE-2017-8934: PCManFM 1.2.5 insecurely uses /tmp for a socket file, allowing a local user to cause a denial of service (appl

Routine

MEDIUM 5.5DOWNGRADE

CVE-2017-8934 is a medium-severity flaw (CVSS 5.5) affecting pcmanfm. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

PCManFM 1.2.5 insecurely uses /tmp for a socket file, allowing a local user to cause a denial of service (application unavailability).

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 73%)
CISA exploited list	No
Weakness	CWE-20
Published	2017-05-15
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: pcmanfm project

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

Am I affected?

Timeline

2017-05-15 14:29 UTCPublished CVE record published
2026-06-17 01:27 UTCUpdated Record last modified

pcmanfm project pcmanfm DOWNGRADE

Affected: 1.2.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.2.5

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.2.5 (Debian / Ubuntu)

apt-cache madison pcmanfm sudo apt install pcmanfm=<VERSION_BEFORE_1.2.5> sudo apt-mark hold pcmanfm

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

dnf --showduplicates list pcmanfm sudo dnf downgrade pcmanfm-<VERSION_BEFORE_1.2.5> sudo dnf versionlock add pcmanfm

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-2017-8934?

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

Is CVE-2017-8934 being exploited?

CVE-2017-8934 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-2017-8934 affect?

CVE-2017-8934 affects pcmanfm. Severity is medium (CVSS 5.5). PCManFM 1.2.5 insecurely uses /tmp for a socket file, allowing a local user to cause a denial of service (application unavailability).

How urgent is CVE-2017-8934?

Priority 26/100. No elevated risk signals yet.

References

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