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-2021-40323

86
FAUCET Score

CVE-2021-40323 is a critical log poisoning vulnerability affecting Cobbler versions prior to 3.3.0, allowing for remote code execution (RCE) through template injection via an XMLRPC method. With a CVSS score of 9.8 (Critical) and an EPSS score indicating high exploitability, this vulnerability presents a significant risk due to its network-based attack vector, low attack complexity, and complete compromise potential (confidentiality, integrity, availability). While not listed in CISA's KEV catalog, a Nuclei template exists for detection, and community discussion is notably high, suggesting active interest in its exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.3.0CPE matchmatch criteria
cpe:2.3:a:cobbler_project:cobbler:*:*:*:*:*:*:*:*

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
88.48%
Probability of exploitation in next 30 days
EPSS Percentile
99.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Nuclei: CVE-2021-40323 · Feb 14, 2022
This CVE's current EPSS score of 0.8848 is in the 99th percentile among its peer group of 36,833 CVEs.

Social Chatter

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 (2)

github_advisorypatch availablevia nvd_reference
View patch
pippatch availablevia ghsa
Product: cobblerFixed in: 3.3.0

Vendor Advisories (2)

pipGHSA-cpqf-3c3r-c9g2high

Cobbler before 3.3.0 allows log poisoning

Oct 5, 2021
redhatCVE-2021-40323Important

cobbler: Arbitrary File Disclosure/Template Injection via generate_script RPC method

Sep 20, 2021

References

github.com / cobbler/cobbler/commit/d8f60bbf14a838c8c8a1dba98086b223e35fe70a
PatchThird Party Advisory
github.com / cobbler/cobbler/releases/tag/v3.3.0
ProductThird Party Advisory