CVE-2018-5996

Name: CVE-2018-5996
Creator: NVD / NIST
Published: 2018-01-31T18:29:00.363+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.91%

Last modified Jun 17, 2026

CVE-2018-5996 is a vulnerability of currently unknown severity. Insufficient exception handling in the method NCompress::NRar3::CDecoder::Code of 7-Zip before 18.00 and p7zip can lead to multiple memory corruptions within the PPMd code, allows remote attackers to cause a denial of service (segmentation fault) or execute arbitrary code via a crafted RAR archive.. EPSS estimates a 2.91% chance of exploitation in the next 30 days.

Description

Insufficient exception handling in the method NCompress::NRar3::CDecoder::Code of 7-Zip before 18.00 and p7zip can lead to multiple memory corruptions within the PPMd code, allows remote attackers to cause a denial of service (segmentation fault) or execute arbitrary code via a crafted RAR archive.

Metrics

EPSS Probability

2.91%

85.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions
7-Zip	7-Zip	< 18.00
7-Zip	P7zip	< 18.0
Debian	Debian Linux	7.0
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0

References

http://www.securitytracker.com/id/1040831
https://0patch.blogspot.si/2018/02/two-interesting-micropatches-for-7-zip.html
https://github.com/p7zip-project/p7zip/issues/32
https://github.com/p7zip-project/p7zip/issues/8
https://landave.io/2018/01/7-zip-multiple-memory-corruptions-via-rar-and-zip/Exploit, Technical Description, Third Party Advisory
http://www.securitytracker.com/id/1040831
https://0patch.blogspot.si/2018/02/two-interesting-micropatches-for-7-zip.html
https://landave.io/2018/01/7-zip-multiple-memory-corruptions-via-rar-and-zip/Exploit, Technical Description, Third Party Advisory

Timeline

Published: Jan 31, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-5996?

How severe is CVE-2018-5996?

Severity scoring for CVE-2018-5996 is pending analysis. The EPSS model estimates a 2.91% probability of exploitation in the next 30 days.

How do I fix CVE-2018-5996?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-5996?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST