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CVE-2021-37322

26
FAUCET Score

CVE-2021-37322 is a use-after-free vulnerability in GCC c++filt v2.26, specifically within the cplus-dem.c component, affecting GNU Binutils and GNU GCC. It carries a high CVSS score of 7.8, indicating a local attack vector with low complexity, but requiring user interaction, and potentially leading to high impacts on confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.32CPE matchmatch criteria
cpe:2.3:a:gnu:binutils:*:*:*:*:*:*:*:*
< 10.1CPE matchmatch criteria
cpe:2.3:a:gnu:gcc:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.85%
Probability of exploitation in next 30 days
EPSS Percentile
54.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0085 is in the 51st percentile among its peer group of 11,621 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

microsoftpatch availablevia msrc
Product: 17017-16820Fixed in: 9.1.0-7
microsoftpatch availablevia msrc
Product: CBL Mariner 1.0 x64Fixed in: 9.1.0-7
microsoftpatch availablevia msrc
Product: CBL Mariner 1.0 ARMFixed in: 9.1.0-7
microsoftpatch availablevia msrc
Product: cm1 gcc 9.1.0-7 on CBL Mariner 1.0Fixed in: 9.1.0-7

Vendor Advisories (3)

microsoft2021-Dec/CVE-2021-37322

CVE-2021-37322

Dec 14, 2021
microsoft2021-Nov/CVE-2021-37322Important

GCC c++filt v2.26 was discovered to contain a use-after-free vulnerability via the component cplus-dem.c.

Nov 9, 2021
redhatCVE-2021-37322Moderate

binutils: use-after-free in c++filt in cplus-dem.c

Feb 22, 2021

References

gcc.gnu.org / bugzilla/show_bug.cgi
ExploitIssue TrackingVendor Advisory