CVE-2005-3051: Stack-based buffer overflow in the ARJ plugin (arj.dll) 3.9.2.0 for 7-Zip 3.13, 4.23, and 4.26 BETA, as used i

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HIGH 9.3DOWNGRADE

CVE-2005-3051 is a high-severity flaw (CVSS 9.3) affecting 7-zip. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Stack-based buffer overflow in the ARJ plugin (arj.dll) 3.9.2.0 for 7-Zip 3.13, 4.23, and 4.26 BETA, as used in products including Turbo Searcher, allows remote attackers to execute arbitrary code via a large ARJ block.

Why this priority

Critical severity
EPSS top 7%: very likely to be exploited

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

Risk facts

CVSS score	9.3 (High)
EPSS exploit chance	6.1% (top 7%)
CISA exploited list	No
Weakness	CWE-119
Published	2005-09-24
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: igor pavlov

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

Am I affected?

Timeline

2005-09-24 00:03 UTCPublished CVE record published
2026-06-16 22:16 UTCUpdated Record last modified

igor pavlov 7-zip DOWNGRADE

Affected: 3.13 · 4.23 · 4.26_beta

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.13

1. Check installed version

apt-cache policy 7-zip || rpm -q 7-zip || 7-zip --version

2. No fixed release: DOWNGRADE to a release before 3.13 (Debian / Ubuntu)

apt-cache madison 7-zip sudo apt install 7-zip=<VERSION_BEFORE_3.13> sudo apt-mark hold 7-zip

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

dnf --showduplicates list 7-zip sudo dnf downgrade 7-zip-<VERSION_BEFORE_3.13> sudo dnf versionlock add 7-zip

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-2005-3051?

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

Is CVE-2005-3051 being exploited?

CVE-2005-3051 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-2005-3051 affect?

CVE-2005-3051 affects 7-zip. Severity is high (CVSS 9.3). Stack-based buffer overflow in the ARJ plugin (arj.dll) 3.9.2.0 for 7-Zip 3.13, 4.23, and 4.26 BETA, as used in products including Turbo Searcher, allows remote attackers to execute arbitrary code via a large ARJ block.

How urgent is CVE-2005-3051?

Priority 56/100. Critical severity; EPSS top 7%: very likely to be exploited

Software pages

7-Zip vulnerabilities

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References

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