CVE-2018-5996
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.88%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.0
- 7.8 HIGHCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 2.88% probability · 87th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- 7-zip/7-zip · 7-zip/p7zip · debian/debian linux
- Source
- cve@mitre.org
EPSS moved from 4.4% on 21 September 2026 to 2.9% on 27 October 2026.
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.