CVE-2021-46195

Name: CVE-2021-46195
Creator: NVD / NIST
Published: 2022-01-14T20:15:15.6+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.78%

Last modified Jun 17, 2026

CVE-2021-46195 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. GCC v12.0 was discovered to contain an uncontrolled recursion via the component libiberty/rust-demangle.c. This vulnerability allows attackers to cause a Denial of Service (DoS) by consuming excessive CPU and memory resources.. EPSS estimates a 0.78% chance of exploitation in the next 30 days.

Description

GCC v12.0 was discovered to contain an uncontrolled recursion via the component libiberty/rust-demangle.c. This vulnerability allows attackers to cause a Denial of Service (DoS) by consuming excessive CPU and memory resources.

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

0.78%

51.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-674

Affected Software

Vendor	Product	Versions
Gnu	Gcc	12.0

References

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103841Exploit, Issue Tracking, Vendor Advisory
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103841Exploit, Issue Tracking, Vendor Advisory

Timeline

Published: Jan 14, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-46195?

How severe is CVE-2021-46195?

CVE-2021-46195 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.78% probability of exploitation in the next 30 days.

How do I fix CVE-2021-46195?

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-2021-46195?

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

Scan your code now

Source: NVD / NIST