CVE catalog

CVE-2020-26682

libass vulnerabilities

[CVE catalog]

In libass 0.14.0, the `ass_outline_construct`'s call to `outline_stroke` causes a signed integer overflow.

Severity: High · CVSS 7.8CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published: Sep 25, 2020, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 1.80% · Oct 27, 2026

Projects and upstream resources

[libass][Source-reported homepage]

Reported versions and fixes

Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.

Distribution / release	Package	Version	Status	Source
Debiantrixie	libass	`1:0.15.0-1`	FixedDistribution-reported fixed boundary	[CVE-2020-26682]
Debiantrixie	libass	`1:0.17.3-1+deb13u1`	Fixed	[CVE-2020-26682]
Debiansid	libass	`1:0.15.0-1`	FixedDistribution-reported fixed boundary	[CVE-2020-26682]
Debiansid	libass	`1:0.17.5-1`	Fixed	[CVE-2020-26682]
Debianforky	libass	`1:0.15.0-1`	FixedDistribution-reported fixed boundary	[CVE-2020-26682]
Debianforky	libass	`1:0.17.5-1`	Fixed	[CVE-2020-26682]
Debianbookworm-security	libass	`1:0.17.1-1+deb12u1`	Fixed	[CVE-2020-26682]
Debianbookworm	libass	`1:0.15.0-1`	FixedDistribution-reported fixed boundary	[CVE-2020-26682]
Debianbookworm	libass	`1:0.17.1-1`	Fixed	[CVE-2020-26682]

Showing 9 fix observations. All 30 observations, including unknown and conflicting reports, are available below.

Provider details and historical evidence

Distribution / release	Package	Version	Status	Source
UnknownRelease not reported	libass	`1:0.15.0-1`	UnknownSource applicability is not established	Provider not reported
Debianbookworm	libass	`1:0.15.0-1`	FixedDistribution-reported fixed boundary	[CVE-2020-26682]
Debianbookworm	libass	`1:0.17.1-1`	Fixed	[CVE-2020-26682]
Debianbookworm-security	libass	`1:0.17.1-1+deb12u1`	Fixed	[CVE-2020-26682]
Debianforky	libass	`1:0.15.0-1`	FixedDistribution-reported fixed boundary	[CVE-2020-26682]
Debianforky	libass	`1:0.17.5-1`	Fixed	[CVE-2020-26682]
Debiansid	libass	`1:0.15.0-1`	FixedDistribution-reported fixed boundary	[CVE-2020-26682]
Debiansid	libass	`1:0.17.5-1`	Fixed	[CVE-2020-26682]
Debiantrixie	libass	`1:0.15.0-1`	FixedDistribution-reported fixed boundary	[CVE-2020-26682]
Debiantrixie	libass	`1:0.17.3-1+deb13u1`	Fixed	[CVE-2020-26682]
Opensuseleap 15.2	libass	`0.14.0-lp152.4.3.1`	UnknownSource applicability is not established	[OPENSUSE-SU-2021:0472-1]Feb 4, 2026, 2:48:11 AM UTC
Suseenterprise storage 6	libass	`0.14.0-3.3.1`	UnknownSource applicability is not established	[SUSE-SU-2021:0936-1]Feb 4, 2026, 4:28:58 AM UTC
Suselinux enterprise high performance computing 15 sp1-espos	libass	`0.14.0-3.3.1`	UnknownSource applicability is not established	[SUSE-SU-2021:0936-1]Feb 4, 2026, 4:28:58 AM UTC
Suselinux enterprise high performance computing 15 sp1-ltss	libass	`0.14.0-3.3.1`	UnknownSource applicability is not established	[SUSE-SU-2021:0936-1]Feb 4, 2026, 4:28:58 AM UTC
Suselinux enterprise high performance computing 15-espos	libass	`0.14.0-3.3.1`	UnknownSource applicability is not established	[SUSE-SU-2021:0936-1]Feb 4, 2026, 4:28:58 AM UTC
Suselinux enterprise high performance computing 15-ltss	libass	`0.14.0-3.3.1`	UnknownSource applicability is not established	[SUSE-SU-2021:0936-1]Feb 4, 2026, 4:28:58 AM UTC
Suselinux enterprise module for desktop applications 15 sp2	libass	`0.14.0-3.3.1`	UnknownSource applicability is not established	[SUSE-SU-2021:0936-1]Feb 4, 2026, 4:28:58 AM UTC
Suselinux enterprise server 15 sp1-bcl	libass	`0.14.0-3.3.1`	UnknownSource applicability is not established	[SUSE-SU-2021:0936-1]Feb 4, 2026, 4:28:58 AM UTC
Suselinux enterprise server 15 sp1-ltss	libass	`0.14.0-3.3.1`	UnknownSource applicability is not established	[SUSE-SU-2021:0936-1]Feb 4, 2026, 4:28:58 AM UTC
Suselinux enterprise server 15-ltss	libass	`0.14.0-3.3.1`	UnknownSource applicability is not established	[SUSE-SU-2021:0936-1]Feb 4, 2026, 4:28:58 AM UTC
Suselinux enterprise server for sap applications 15	libass	`0.14.0-3.3.1`	UnknownSource applicability is not established	[SUSE-SU-2021:0936-1]Feb 4, 2026, 4:28:58 AM UTC
Suselinux enterprise server for sap applications 15 sp1	libass	`0.14.0-3.3.1`	UnknownSource applicability is not established	[SUSE-SU-2021:0936-1]Feb 4, 2026, 4:28:58 AM UTC
Susemanager proxy 4.0	libass	`0.14.0-3.3.1`	UnknownSource applicability is not established	[SUSE-SU-2021:0936-1]Feb 4, 2026, 4:28:58 AM UTC
Susemanager retail branch server 4.0	libass	`0.14.0-3.3.1`	UnknownSource applicability is not established	[SUSE-SU-2021:0936-1]Feb 4, 2026, 4:28:58 AM UTC
Susemanager server 4.0	libass	`0.14.0-3.3.1`	UnknownSource applicability is not established	[SUSE-SU-2021:0936-1]Feb 4, 2026, 4:28:58 AM UTC
Ubuntunoble	libass	`1:0.17.1-2ubuntu0.1~esm1`	UnknownSource applicability is not established	Provider not reported
Ubuntunoble	libass-dev	`1:0.17.1-2ubuntu0.1~esm1`	UnknownSource applicability is not established	Provider not reported
Ubuntunoble	libass9	`1:0.17.1-2ubuntu0.1~esm1`	UnknownSource applicability is not established	Provider not reported
Ubuntupro	libass	`1:0.14.0-2`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-26682]Sep 25, 2026, 12:36:21 AM UTC
Ubuntupro	libass	`1:0.14.0-2ubuntu0.1~esm1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-26682]Sep 25, 2026, 12:36:21 AM UTC

Original provider fields

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      "provider_updated_at": "2026-02-04T02:48:11.862932Z",
      "applicability_unknown": true
    }
  ]
}

[Debian bug #975108]

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[libass9]Unknown
Source package: [libass]
Details (2)
- 1:0.17.1-1 · amd64 · bookworm
  Fixed · Fixed: 1:0.15.0-1
  usn · libass · debian · bookworm; usn · libass · debian · 12
- 1:0.17.1-1 · arm64 · bookworm
  Fixed · Fixed: 1:0.15.0-1
  usn · libass · debian · bookworm; usn · libass · debian · 12
[libass-dev]Unknown
Source package: [libass]
Details (2)
- 1:0.17.1-1 · amd64 · bookworm
  Fixed · Fixed: 1:0.15.0-1
  usn · libass · debian · bookworm; usn · libass · debian · 12
- 1:0.17.1-1 · arm64 · bookworm
  Fixed · Fixed: 1:0.15.0-1
  usn · libass · debian · bookworm; usn · libass · debian · 12

[Debian 13 (Trixie)]

[libass9]Unknown
Source package: [libass]
Details (2)
- 1:0.17.3-1+deb13u1 · amd64 · trixie
  Fixed · Fixed: 1:0.15.0-1
  usn · libass · debian · 13
- 1:0.17.3-1+deb13u1 · arm64 · trixie
  Fixed · Fixed: 1:0.15.0-1
  usn · libass · debian · 13
[libass-dev]Unknown
Source package: [libass]
Details (2)
- 1:0.17.3-1+deb13u1 · amd64 · trixie
  Fixed · Fixed: 1:0.15.0-1
  usn · libass · debian · 13
- 1:0.17.3-1+deb13u1 · arm64 · trixie
  Fixed · Fixed: 1:0.15.0-1
  usn · libass · debian · 13

Observed: Oct 23, 2026, 5:50:15 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]