Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2020-12658

24
FAUCET Score

CVE-2020-12658 describes a critical vulnerability in gssproxy versions prior to 0.8.3, where a threading error in gp_worker_main() prevents a mutex from being unlocked before thread exit. This flaw impacts Debian Linux and the gssproxy project. With a CVSS score of 9.8 (CRITICAL), this vulnerability allows for unauthenticated remote attackers to achieve high impact on confidentiality, integrity, and availability due to its low attack complexity. Despite its severity, 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
< 0.8.3CPE matchmatch criteria
cpe:2.3:a:gssproxy_project:gssproxy:*:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.68%
Probability of exploitation in next 30 days
EPSS Percentile
74.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0168 is in the 62nd percentile among its peer group of 36,862 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 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 (1)

github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2020-12658

gssproxy: not unlocking cond_mutex before pthread exit in gp_worker_main() in gp_workers.c

Dec 31, 2020

References

github.com / gssapi/gssproxy/commit/cb761412e299ef907f22cd7c4146d50c8a792003
PatchThird Party Advisory
github.com / gssapi/gssproxy/compare/v0.8.2...v0.8.3
Third Party Advisory
lists.debian.org / debian-lts-announce/2021/01/msg00004.html
Mailing ListThird Party Advisory
pagure.io / gssproxy/c/cb761412e299ef907f22cd7c4146d50c8a792003
Third Party Advisory