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No exploitation reportedFix available

CVE-2021-46195

No exploitation reported by the sources we read.

  • Published2022-01-14
  • WeaknessCWE-674

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2022-01-1420:15CVE publishedNVD

Versions per branch

NVD
Gnu gcc
BranchAffectedFixed in
12.0= 12.0no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • binutilsSUSE:OpenStack Cloud Crowbar 9all versions · fixed in 2.39-9.50.1
  • binutilsSUSE:OpenStack Cloud 9all versions · fixed in 2.39-9.50.1
  • binutilsSUSE:Manager Server 4.1all versions · fixed in 2.39-150100.7.40.1
  • binutilsSUSE:Manager Retail Branch Server 4.1all versions · fixed in 2.39-150100.7.40.1
  • binutilsSUSE:Manager Proxy 4.1all versions · fixed in 2.39-150100.7.40.1
  • binutilsSUSE:Linux Enterprise Software Development Kit 12 SP5all versions · fixed in 2.39-9.50.1and 2 other packages
  • binutilsSUSE:Linux Enterprise Server for SAP Applications 15 SP2all versions · fixed in 2.39-150100.7.40.1
  • binutilsSUSE:Linux Enterprise Server for SAP Applications 15 SP1all versions · fixed in 2.39-150100.7.40.1

37 more package ranges on OSV.dev

Vendor advisories

  • CVE-2021-46195 Red Hat Product Security113 products fixed · 155 known affected

    gcc: uncontrolled recursion in libiberty/rust-demangle.c

    cpp as a component of Red Hat Enterprise Linux 10 · gcc-c++ as a component of Red Hat Enterprise Linux 10 · gcc-gfortran as a component of Red Hat Enterprise Linux 10 · +152 more

  • ICSA-23-348-10 CISA5 known affected

    Siemens SIMATIC S7-1500

    SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) · SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) · SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) · +2 more

  • SSA-398330 Siemens ProductCERT5 known affected

    SSA-398330: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP >= V3.1.0 and < V3.1.5

    SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) >= V3.1.0 < V3.1.5 · SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) >= V3.1.0 < V3.1.5 · SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) >= V3.1.0 < V3.1.5 · +2 more

  • RHSA-2022:8415 Red Hat Product Security113 products fixed

    Red Hat Security Advisory: mingw-gcc security and bug fix update

Full record on NVD

Fix

  1. Vendor fix CISA ICSA-23-348-10 · 5 productsUpdate to V3.1.5 or later version
  2. Vendor fix Siemens ProductCERT SSA-398330 · 1 productUpdate to V3.1.5 or later version
  3. Vendor fix Red Hat Product Security RHSA-2022:8415 · 113 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
  4. Mitigation from the vendor CISA ICSA-23-348-10 · 5 productsOnly build and run applications from trusted sources.
  5. No fix available, says the vendor Red Hat Product Security CVE-2021-46195 · 76 productsFix deferred
  6. No fix planned, says the vendor Red Hat Product Security CVE-2021-46195 · 79 productsOut of support scope

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Published
2022-01-14
Last Modified
2026-10-14
NVD status
Modified
GitHub Advisory
GHSA-gr6j-4vhj-c665

Frequently asked questions

What is CVE-2021-46195?

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.

Is CVE-2021-46195 actively exploited?

Active exploitation of CVE-2021-46195 has not been confirmed. Its EPSS score was 0.9% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-46195?

CVE-2021-46195 has a CVSS v3 base score of 5.5 (MEDIUM severity), with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

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