Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2021-46195

CVE-2021-46195MEDIUM

n/a n/a — GCC v12.0 was discovered to contain an uncontrolled recursion via the component libiberty/rust-demangle.c.

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   N   R  U  N  N  H    5.5   .0080   55.7     —

AFFECTED
  Product  Versions  Fixed
  n/a      n/a –     —

TIMELINE
  Jan 10  Reserved by mitre
  Jan 14  Published (CNA: mitre)
  Oct 8   ENRICHED — CVE-2021-46195. Received CVSS 5.5 and CPE data from NVD.
  Oct 8   EXPLOIT PUBLISHED — CVE-2021-46195. Public exploit reference added.
  Oct 14  EXPLOIT PUBLISHED — CVE-2021-46195. Public exploit reference added.

CWE-674 · CNA: mitre · CVSS v3.1 · 2 references · NVD status: Modified

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.

Lifecycle

Complete event history — 5 events, chronological
Date	Event	Detail
January 10, 2022	Reserved	Reserved by mitre
January 14, 2022	Published	Published (CNA: mitre)
October 8, 2026	ENRICHED	ENRICHED — CVE-2021-46195. Received CVSS 5.5 and CPE data from NVD.
October 8, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2021-46195. Public exploit reference added.
October 14, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2021-46195. Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
n/a	n/a	—	n/a	—

Weaknesses

CWE-674

References (2)

https://cert-portal.siemens.com/productcert/html/ssa-398330.html
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103841 [Exploit, Issue Tracking, Vendor Advisory]

Authoritative record: CVE-2021-46195 at cve.org

Weaknesses: CWE-674

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2021-46195 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.