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CVE-2020-36277

26
FAUCET Score

CVE-2020-36277 describes a denial-of-service vulnerability in Leptonica versions prior to 1.80.0, specifically impacting Debian, Fedora, and Linux distributions. This high-severity flaw (CVSS 7.5) can be exploited remotely with low attack complexity, leading to an application crash due to an incorrect left shift operation in the pixConvert2To8 function. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.80.0CPE matchmatch criteria
cpe:2.3:a:leptonica:leptonica:*:*:*:*:*:*:*:*
32CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
33CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.43%
Probability of exploitation in next 30 days
EPSS Percentile
82.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0243 is in the 69th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

bugs.chromium.org / p/oss-fuzz/issues/detail
ExploitIssue TrackingThird Party Advisory
github.com / DanBloomberg/leptonica/compare/1.79.0...1.80.0
PatchRelease NotesThird Party Advisory
github.com / DanBloomberg/leptonica/pull/499
PatchThird Party Advisory
lists.debian.org / debian-lts-announce/2021/03/msg00037.html
Mailing ListThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/JQUEA2X6UTH4DMYCMZAWE2QQLN5YANUA
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/RD5AIWHWE334HGYZJR2U3I3JYKSSO2LW
security.gentoo.org / glsa/202107-53
Third Party Advisory