CVE-2005-2945: arc 5.21j and earlier create temporary files with world-readable permissions, which allows local users to read

Q: How do I fix CVE-2005-2945?

arc: upgrade to newer than 5.21j. Exact commands for each OS are on this page.

Q: Is CVE-2005-2945 being exploited?

CVE-2005-2945 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2005-2945 affect?

CVE-2005-2945 affects arc. Severity is low (CVSS 2.1). arc 5.21j and earlier create temporary files with world-readable permissions, which allows local users to read sensitive information from files created by (1) arc (arc.c) or (2) marc (marc.c).

Q: How urgent is CVE-2005-2945?

Priority 15/100. No elevated risk signals yet.

Routine

LOW 2.1UPGRADE

CVE-2005-2945 is a low-severity flaw (CVSS 2.1) affecting arc. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

arc 5.21j and earlier create temporary files with world-readable permissions, which allows local users to read sensitive information from files created by (1) arc (arc.c) or (2) marc (marc.c).

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	2.1 (Low)
EPSS exploit chance	0.4% (top 70%)
CISA exploited list	No
Published	2005-09-16
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: arc

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2005-09-16 21:03 UTCPublished CVE record published
2026-06-16 22:15 UTCUpdated Record last modified

arc arc UPGRADE

Affected: <= 5.21j

Fixed in: newer than 5.21j

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 5.21j (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade arc

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade arc

Note

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

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-2005-2945?

arc: upgrade to newer than 5.21j. Exact commands for each OS are on this page.

Is CVE-2005-2945 being exploited?

CVE-2005-2945 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-2005-2945 affect?

CVE-2005-2945 affects arc. Severity is low (CVSS 2.1). arc 5.21j and earlier create temporary files with world-readable permissions, which allows local users to read sensitive information from files created by (1) arc (arc.c) or (2) marc (marc.c).

How urgent is CVE-2005-2945?

Priority 15/100. No elevated risk signals yet.

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References

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