Home / Vulnerabilities / CVE-2021-3156
HIGH SEVERITY
CVE-2021-3156 Sudo · Sudo

Sudo Heap-Based Buffer Overflow Vulnerability

Technical Severity

CVSS v3.1 Metrics

HIGH
7.8 / 10
Minimal Risk Critical
Vector Specification
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitation Likelihood

EPSS Prediction

92.31 %
Predictive Probability
Percentile Rank
99.7 th

Documented as more likely to be exploited than 99.7% of known CVEs.

Detection Date

Apr 06, 2022

Remediation Due

Apr 27, 2022

CISA Catalog Active

Threat Analysis

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

Remediation Directive

Apply updates per vendor instructions.

External Intelligence