CVE-2022-27943

Exp

libiberty/rust-demangle.c in GNU GCC 11.2 allows stack consumption in demangle_const, as demonstrated by nm-new.

Published: 2022-03-26 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-27943 is rated Exploit Available (56.9/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.89%). 2 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2022-27943

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2022-27943

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.05% 0.89% +0.85%
2 2026-05-22 0.05% 0.05% -0.00%
3 2026-02-02 — 0.05% —

Full EPSS history (14 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-27943

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.5 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 3.6 [email protected]
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2022-27943

OS Trackers for CVE-2022-27943

vendor priority summary link
debian unimportant CVE-2022-27943 unimportant priority: Debian including 1 source packages (gcc-12), 4 status rows across 4 suites (bookworm, forky, sid, trixie): open 4. https://security-tracker.debian.org/tracker/CVE-2022-27943
redhat low — https://access.redhat.com/security/cve/CVE-2022-27943
suse medium CVE-2022-27943 severity moderate: SUSE including 390 source package names (0.23.1-12.3:binutils-2.39-150100.7.40.1, 0.23.1-12.3:libctf-nobfd0-2.39-150100.7.40.1, …), 1314 product×package rows across 296 product lines (Container bci/bci-sle15-kernel-module-devel, Container bci/gcc, … (296 product lines)): Fixed 1078, Known Affected 231, Known Not Affected 5. https://www.suse.com/security/cve/CVE-2022-27943/
ubuntu low CVE-2022-27943 low priority: Ubuntu including 52 source packages (binutils, crash, …), 719 status rows across 15 suites (bionic, focal, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 427, not-affected 137, needs-triage 82, ignored 63, needed 9, released 1. https://ubuntu.com/security/CVE-2022-27943

Affected software / configurations for CVE-2022-27943

Vendor Product Version Raw CPE
gnu gcc 11.2 cpe:2.3:a:gnu:gcc:11.2:*:*:*:*:*:*:*
fedoraproject fedora 36 cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*

References for CVE-2022-27943

cvelogic Threat Intelligence