CVE-2013-6494: fedup 0.9.0 in Fedora 19, 20, and 21 uses a temporary directory with a static name for its download cache, whi

Routine

LOW 2.1DOWNGRADE

CVE-2013-6494 is a low-severity flaw (CVSS 2.1) affecting fedup. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

fedup 0.9.0 in Fedora 19, 20, and 21 uses a temporary directory with a static name for its download cache, which allows local users to cause a denial of service (prevention of system updates).

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	2.1 (Low)
EPSS exploit chance	0.4% (top 68%)
CISA exploited list	No
Weakness	CWE-17
Published	2014-12-02
Last modified	2026-06-17

Publisher (CNA): Red Hat, Inc. · Vendor: fedup project

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

Am I affected?

Timeline

2014-12-02 01:59 UTCPublished CVE record published
2026-06-17 00:00 UTCUpdated Record last modified

fedup project fedup DOWNGRADE

Affected: 0.9.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.9.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.9.0 (Debian / Ubuntu)

apt-cache madison fedup sudo apt install fedup=<VERSION_BEFORE_0.9.0> sudo apt-mark hold fedup

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

dnf --showduplicates list fedup sudo dnf downgrade fedup-<VERSION_BEFORE_0.9.0> sudo dnf versionlock add fedup

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-2013-6494?

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

Is CVE-2013-6494 being exploited?

CVE-2013-6494 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-2013-6494 affect?

CVE-2013-6494 affects fedup. Severity is low (CVSS 2.1). fedup 0.9.0 in Fedora 19, 20, and 21 uses a temporary directory with a static name for its download cache, which allows local users to cause a denial of service (prevention of system updates).

How urgent is CVE-2013-6494?

Priority 15/100. No elevated risk signals yet.

References

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