CVE-2020-36277

Name: CVE-2020-36277
Creator: NVD / NIST
Published: 2021-03-11T21:15:11.827+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 2.43%

Last modified Jun 17, 2026

CVE-2020-36277 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Leptonica before 1.80.0 allows a denial of service (application crash) via an incorrect left shift in pixConvert2To8 in pixconv.c.. EPSS estimates a 2.43% chance of exploitation in the next 30 days.

Description

Leptonica before 1.80.0 allows a denial of service (application crash) via an incorrect left shift in pixConvert2To8 in pixconv.c.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

2.43%

82.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-670

Affected Software

Vendor	Product	Versions
Leptonica	Leptonica	< 1.80.0
Fedoraproject	Fedora	32
Fedoraproject	Fedora	33
Debian	Debian Linux	9.0

References

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=21997Exploit, Issue Tracking, Third Party Advisory
https://github.com/DanBloomberg/leptonica/compare/1.79.0...1.80.0Patch, Release Notes, Third Party Advisory
https://github.com/DanBloomberg/leptonica/pull/499Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/03/msg00037.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JQUEA2X6UTH4DMYCMZAWE2QQLN5YANUA/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RD5AIWHWE334HGYZJR2U3I3JYKSSO2LW/
https://security.gentoo.org/glsa/202107-53Third Party Advisory
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=21997Exploit, Issue Tracking, Third Party Advisory
https://github.com/DanBloomberg/leptonica/compare/1.79.0...1.80.0Patch, Release Notes, Third Party Advisory
https://github.com/DanBloomberg/leptonica/pull/499Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/03/msg00037.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JQUEA2X6UTH4DMYCMZAWE2QQLN5YANUA/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RD5AIWHWE334HGYZJR2U3I3JYKSSO2LW/
https://security.gentoo.org/glsa/202107-53Third Party Advisory

Timeline

Published: Mar 11, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-36277?

Leptonica before 1.80.0 allows a denial of service (application crash) via an incorrect left shift in pixConvert2To8 in pixconv.c.

How severe is CVE-2020-36277?

CVE-2020-36277 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.43% probability of exploitation in the next 30 days.

How do I fix CVE-2020-36277?

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-2020-36277?

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

Scan your code now

Source: NVD / NIST