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CVE-2020-11765

16
FAUCET Score

CVE-2020-11765 is an out-of-bounds read vulnerability in OpenEXR versions prior to 2.4.1, specifically within the DwaCompressor::Classifier::Classifier function due to an off-by-one error. This vulnerability affects various products including Apple, Canonical, Debian, Fedora, OpenEXR, and openSUSE. Rated as Medium severity (CVSS 5.5), it requires local user interaction and could lead to a denial of service, but not confidentiality or integrity impacts. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or inclusion in CISA's KEV catalog, though it has received limited community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.4.1CPE matchmatch criteria
cpe:2.3:a:openexr:openexr:*:*:*:*:*:*:*:*
32CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
15.1CPE matchmatch criteria
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.70%
Probability of exploitation in next 30 days
EPSS Percentile
74.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0170 is in the 85th percentile among its peer group of 5,765 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

Media Mentions

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

Remediation

Vendor Patches (2)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: mingw-OpenEXR
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: OpenEXR

Vendor Advisories (1)

redhatCVE-2020-11765Moderate

OpenEXR: off-by-one error in ImfXdr.h read function by DwaCompressor::Classifier::Classifier leading to an out-of-bounds read

Feb 8, 2020

References

lists.opensuse.org / opensuse-security-announce/2020-05/msg00051.html
Mailing ListThird Party Advisory
bugs.chromium.org / p/project-zero/issues/detail
ExploitThird Party Advisory
github.com / AcademySoftwareFoundation/openexr/blob/master/CHANGES.md
Release NotesThird Party Advisory
github.com / AcademySoftwareFoundation/openexr/releases/tag/v2.4.1
Release NotesThird Party Advisory
lists.debian.org / debian-lts-announce/2020/08/msg00056.html
Mailing ListThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/F4KFGDQG5PVYAU7TS5MZ7XCS6EMPVII3
security.gentoo.org / glsa/202107-27
Third Party Advisory
support.apple.com / kb/HT211288
Third Party Advisory
support.apple.com / kb/HT211289
Third Party Advisory
support.apple.com / kb/HT211290
Third Party Advisory
support.apple.com / kb/HT211291
Third Party Advisory
support.apple.com / kb/HT211293
Third Party Advisory
support.apple.com / kb/HT211294
Third Party Advisory
support.apple.com / kb/HT211295
Third Party Advisory
usn.ubuntu.com / 4339-1
Third Party Advisory
debian.org / security/2020/dsa-4755
Third Party Advisory