CVE-2021-27419

9.8 criticalEPSS 1.7%

Critical (9.8) in uclibc-ng project uclibc-ng. EPSS 1.7% chance of exploitation in the next 30 days.

uClibc-ng versions prior to 1.0.37 are vulnerable to integer wrap-around in functions malloc-simple. This improper memory assignment can lead to arbitrary memory allocation, resulting in unexpected behavior such as a crash or a remote code injection/execution.

Severity

CVSS 3.1

9.8 critical

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

EPSS: 1.7% chance of exploitation in the next 30 days; higher than 77% of CVEs (scores of 2026-10-31)
CWE: CWE-190
Published: 2022-05-03
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

uclibc-ng_project:uclibc-ng

References

https://downloads.uclibc-ng.org/releases/
https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04
https://downloads.uclibc-ng.org/releases/
https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04

Check your stack JSON