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CVE-2022-27943

22
FAUCET Score

CVE-2022-27943 describes a stack consumption vulnerability in the libiberty/rust-demangle.c component of GNU GCC 11.2, affecting Fedora and GNU GCC products. This medium-severity vulnerability (CVSS 5.5) can lead to a denial of service (high availability impact) through local access and user interaction, but does not compromise confidentiality or integrity. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
11.2CPE matchmatch criteria
cpe:2.3:a:gnu:gcc:11.2:*:*:*:*:*:*:*
36CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.89%
Probability of exploitation in next 30 days
EPSS Percentile
55.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0089 is in the 65th percentile among its peer group of 5,760 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (4)

redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: gcc
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: gcc-toolset-10-gcc
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: gcc-toolset-11-gcc
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: gcc

Vendor Advisories (1)

redhatCVE-2022-27943Low

binutils: libiberty/rust-demangle.c in GNU GCC 11.2 allows stack exhaustion in demangle_const

Mar 26, 2022

References

gcc.gnu.org / bugzilla/show_bug.cgi
ExploitIssue TrackingVendor Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/H424YXGW7OKXS2NCAP35OP6Y4P4AW6VG
sourceware.org / bugzilla/show_bug.cgi
ExploitIssue TrackingThird Party Advisory