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CVE-2022-26981

28
FAUCET Score

CVE-2022-26981 describes a buffer overflow vulnerability in Liblouis versions up to 3.21.0, specifically within the compilePassOpcode function, affecting products like Apple and Fedora. With a CVSS score of 7.8 (High), this vulnerability can lead to high impact on confidentiality, integrity, and availability if exploited. The attack requires local access and user interaction, but is of low complexity. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.21.0CPE matchmatch criteria
cpe:2.3:a:liblouis:liblouis:*:*:*:*:*:*:*:*
36CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
< 15.6CPE matchmatch criteria
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
< 15.6CPE matchmatch criteria
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
>= 12.0, < 12.5CPE matchmatch criteria
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.46%
Probability of exploitation in next 30 days
EPSS Percentile
70.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0146 is in the 69th percentile among its peer group of 11,621 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

github_advisorypatch availablevia nvd_reference
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: liblouis
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: liblouis

Vendor Advisories (1)

redhatCVE-2022-26981Low

liblouis: buffer overflow in compilePassOpcode

Mar 13, 2022

References

seclists.org / fulldisclosure/2022/Jul/12
Mailing ListThird Party Advisory
seclists.org / fulldisclosure/2022/Jul/15
Mailing ListThird Party Advisory
seclists.org / fulldisclosure/2022/Jul/16
Mailing ListThird Party Advisory
seclists.org / fulldisclosure/2022/Jul/18
Mailing ListThird Party Advisory
github.com / liblouis/liblouis/issues/1171
ExploitIssue TrackingPatchThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/CFD2KIHESDUCNWTEW3USFB5GKTWT624L
security.gentoo.org / glsa/202301-06
Third Party Advisory
support.apple.com / kb/HT213340
Third Party Advisory
support.apple.com / kb/HT213342
Third Party Advisory
support.apple.com / kb/HT213345
Third Party Advisory
support.apple.com / kb/HT213346
Third Party Advisory