CVE catalog

CVE-2018-5996

p7zip-rar: CVE-2018-5996

Severity: Critical · CVSS 9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: Jan 23, 2018, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 2.88% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	p7zip-rar	trixie	`16.02+transitional.1`	fixed
Debian	p7zip-rar	bookworm	`16.02+really25.00+ds-0+deb12u1`	fixed
Alpine	p7zip	3.10	`16.02-r3`	fixed
Alpine	p7zip	3.11	`16.02-r3`	fixed
Alpine	p7zip	3.12	`16.02-r3`	fixed
Alpine	p7zip	3.13	`16.02-r3`	fixed
Alpine	p7zip	3.14	`16.02-r3`	fixed
Alpine	p7zip	3.15	`16.02-r3`	fixed
Alpine	p7zip	3.16	`16.02-r3`	fixed
Alpine	p7zip	3.17	`16.02-r3`	fixed
Alpine	p7zip	3.5	`16.02-r3`	fixed
Alpine	p7zip	3.6	`16.02-r3`	fixed
Alpine	p7zip	3.7	`16.02-r3`	fixed
Alpine	p7zip	3.8	`16.02-r3`	fixed
Alpine	p7zip	3.9	`16.02-r3`	fixed
Ubuntu	p7zip-rar	16.04	`9.20.1~ds.1-3`	vulnerable
Ubuntu	p7zip-rar	16.04	`9.20.1~ds.1-4`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	p7zip-rar	source	trixie	`16.02-2`	not yet assigned	Not reported	[888314]
Debian	p7zip-rar	source	bookworm	`16.02-2`	not yet assigned	Not reported	[888314]
Alpine	p7zip	apk	3.10	`16.02-r3`	Not reported	ALPINE-CVE-2018-5996	Not reported
Alpine	p7zip	apk	3.11	`16.02-r3`	Not reported	ALPINE-CVE-2018-5996	Not reported
Alpine	p7zip	apk	3.12	`16.02-r3`	Not reported	ALPINE-CVE-2018-5996	Not reported
Alpine	p7zip	apk	3.13	`16.02-r3`	Not reported	ALPINE-CVE-2018-5996	Not reported
Alpine	p7zip	apk	3.14	`16.02-r3`	Not reported	ALPINE-CVE-2018-5996	Not reported
Alpine	p7zip	apk	3.15	`16.02-r3`	Not reported	ALPINE-CVE-2018-5996	Not reported
Alpine	p7zip	apk	3.16	`16.02-r3`	Not reported	ALPINE-CVE-2018-5996	Not reported
Alpine	p7zip	apk	3.17	`16.02-r3`	Not reported	ALPINE-CVE-2018-5996	Not reported
Alpine	p7zip	apk	3.5	`16.02-r3`	Not reported	ALPINE-CVE-2018-5996	Not reported
Alpine	p7zip	apk	3.6	`16.02-r3`	Not reported	ALPINE-CVE-2018-5996	Not reported
Alpine	p7zip	apk	3.7	`16.02-r3`	Not reported	ALPINE-CVE-2018-5996	Not reported
Alpine	p7zip	apk	3.8	`16.02-r3`	Not reported	ALPINE-CVE-2018-5996	Not reported
Alpine	p7zip	apk	3.9	`16.02-r3`	Not reported	ALPINE-CVE-2018-5996	Not reported

[Debian bug #888314]

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[p7zip-rar]Unknown
Details (2)
- 16.02+really25.00+ds-0+deb12u1 · amd64 · bookworm
  Fixed · Fixed: 16.02-2
  dsa · p7zip-rar · debian · bookworm; dsa · p7zip-rar · debian · 12
- 16.02+really25.00+ds-0+deb12u1 · arm64 · bookworm
  Fixed · Fixed: 16.02-2
  dsa · p7zip-rar · debian · bookworm; dsa · p7zip-rar · debian · 12

[Debian 13 (Trixie)]

[p7zip-rar]Unknown
Details (2)
- 16.02+transitional.1 · all · trixie
  Fixed · Fixed: 16.02-2
  dsa · p7zip-rar · debian · 13
- 16.02+transitional.1 · all · trixie
  Fixed · Fixed: 16.02-2
  dsa · p7zip-rar · debian · 13

Observed: Oct 23, 2026, 5:37:27 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]