vulnerability
Ubuntu: (Multiple Advisories) (CVE-2021-3156): Sudo vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:L/AC:L/Au:N/C:C/I:C/A:C) | Jan 26, 2021 | Jan 27, 2021 | Apr 16, 2026 |
Severity
7
CVSS
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Published
Jan 26, 2021
Added
Jan 27, 2021
Modified
Apr 16, 2026
Description
Sudo before 1.9.5p2 contains an off-by-one error that can result in a heap-based buffer overflow, which allows privilege escalation to root via "sudoedit -s" and a command-line argument that ends with a single backslash character.
Solutions
ubuntu-pro-upgrade-sudoubuntu-upgrade-sudoubuntu-upgrade-sudo-ldap
Rapid7 Labs
2026 Global Threat Landscape Report
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