CVE-2019-20022

An invalid memory address dereference was discovered in load_pnm in frompnm.c in libsixel before...

6.5 MediumFix available

CVE-2019-20022 is a medium vulnerability (CVSS 6.5) in Saitoha Libsixel, published December 27, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.93%, the 60th percentile. Fixed in libsixel 1.8.6-1.

An invalid memory address dereference was discovered in load_pnm in frompnm.c in libsixel before 1.8.3.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

0.93%Up 0.5 points since Apr 14, 2021

What each source reports

NVD Score used 6.5

An invalid memory address dereference was discovered in load_pnm in frompnm.c in libsixel before 1.8.3.

Record: CVE-2019-20022
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 2.0: 4.3 MediumAV:N/AC:M/Au:N/C:N/I:N/A:P
Weakness: CWE-672
Updated: 2026-11-02

CVE List No score

An invalid memory address dereference was discovered in load_pnm in frompnm.c in libsixel before 1.8.3.

Record: CVE-2019-20022
Updated: 2026-11-02

EUVDEUVD-2019-10578 No score

An invalid memory address dereference was discovered in load_pnm in frompnm.c in libsixel before 1.8.3.

Record: EUVD-2019-10578
Updated: 2026-11-03

GitHub AdvisoriesGHSA-86j3-8qqw-575j 6.5

An invalid memory address dereference was discovered in load_pnm in frompnm.c in libsixel before...

An invalid memory address dereference was discovered in load_pnm in frompnm.c in libsixel before 1.8.3.

Record: GHSA-86j3-8qqw-575j
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness: CWE-672
Updated: 2026-11-02

OSV 6.5

An invalid memory address dereference was discovered in load_pnm in frompnm.c in libsixel before 1.8.3.

Record: CVE-2019-20022
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2019-20022 6.5

An invalid memory address dereference was discovered in load_pnm in frompnm.c in libsixel before 1.8.3.

Record: DEBIAN-CVE-2019-20022
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2019-20022 6.5

An invalid memory address dereference was discovered in load_pnm in frompnm.c in libsixel before 1.8.3.

Record: UBUNTU-CVE-2019-20022
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

Affected products

saitoha libsixel

Affected packages

Affected packages
Package	Affected	Fixed
`libsixel` Debian:12	before 1.8.6-1	1.8.6-1
`libsixel` Debian:13	before 1.8.6-1	1.8.6-1
`libsixel` Debian:14	before 1.8.6-1	1.8.6-1
`libsixel` Ubuntu:16.04:LTS	All versions, plus listed versions 1.4.2-11.5.2-2	None known
`libsixel` Ubuntu:18.04:LTS	All versions, plus listed versions 1.5.2-21.7.3-1	None known
`libsixel` Ubuntu:20.04:LTS	All versions, plus listed versions 1.8.2-11.8.2-2.1	None known

History

History
When	Changed	Sources
2026-11-03	aliases	EUVD
2026-11-02	created	CVE List, GitHub Advisories, NVD, OSV

Attack profile

How easy it is to exploit

What an attacker can affect

Exploit likelihood

What each source reports

Affected products

Affected packages

History

References