CVE

CVE-2021-3156

Sudo Heap-Based Buffer Overflow Vulnerability

Sudo · Sudo

Date added (CISA)

2022-04-06

Remediation due

2022-04-27

Known ransomware use

Not indicated

Remediation priority

P2 — past CISA due date

Associated with

Related to

Lazarus Group (TraderTraitor cluster) / APT38 / BlueNoroff · SPECTREcampaignCorrelated cluster2026-09-16
BadIIScampaignCorrelated cluster2026-08-26
DysphoriacampaignCorrelated cluster2026-08-24
SPECTREcampaignCorrelated cluster2026-08-20

Description

Sudo contains an off-by-one error that can result in a heap-based buffer overflow, which allows for privilege escalation.