CVE-2022-43995

Name: CVE-2022-43995
Creator: NVD / NIST
Published: 2022-11-02T14:15:16.187+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.1/10EPSS 0.27%

Last modified Jun 17, 2026

CVE-2022-43995 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. Sudo 1.8.0 through 1.9.12, with the crypt() password backend, contains a plugins/sudoers/auth/passwd.c array-out-of-bounds error that can result in a heap-based buffer over-read. This can be triggered by arbitrary local users with access to Sudo by entering a password of seven characters or fewer. EPSS estimates a 0.27% chance of exploitation in the next 30 days.

Description

Sudo 1.8.0 through 1.9.12, with the crypt() password backend, contains a plugins/sudoers/auth/passwd.c array-out-of-bounds error that can result in a heap-based buffer over-read. This can be triggered by arbitrary local users with access to Sudo by entering a password of seven characters or fewer. The impact could vary depending on the system libraries, compiler, and processor architecture.

Metrics

CVSS 3.1

7.1/10

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

EPSS Probability

0.27%

18.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Sudo Project	Sudo	>= 1.8.0, < 1.9.12
Sudo Project	Sudo	1.9.12

References

https://bugzilla.redhat.com/show_bug.cgi?id=2139911Issue Tracking, Third Party Advisory
https://github.com/sudo-project/sudo/commit/bd209b9f16fcd1270c13db27ae3329c677d48050Patch, Third Party Advisory
https://news.ycombinator.com/item?id=33465707Third Party Advisory
https://security.gentoo.org/glsa/202211-08Third Party Advisory
https://www.sudo.ws/security/advisories/Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2139911Issue Tracking, Third Party Advisory
https://github.com/sudo-project/sudo/commit/bd209b9f16fcd1270c13db27ae3329c677d48050Patch, Third Party Advisory
https://news.ycombinator.com/item?id=33465707Third Party Advisory
https://security.gentoo.org/glsa/202211-08Third Party Advisory
https://www.sudo.ws/security/advisories/Vendor Advisory

Timeline

Published: Nov 2, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-43995?

How severe is CVE-2022-43995?

CVE-2022-43995 has a CVSS score of 7.1/10 (HIGH severity). The EPSS model estimates a 0.27% probability of exploitation in the next 30 days.

How do I fix CVE-2022-43995?

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-2022-43995?

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

Scan your code now

Source: NVD / NIST