CVE-2021-40323

CRITICALNVD 9.89.8—Elevated

9.8

Cobbler before 3.3.0 allows log poisoning, and resultant Remote Code Execution, via an XMLRPC method that logs to the logfile for template injection.

CVSS v3: 9.8
EG Score: 9.8(high)
EPSS: 99.8%
KEV: Not listed

Published

October 4, 2021

Last Modified

November 21, 2024

References (4)

cve@mitrehttps://github.com/cobbler/cobbler/commit/d8f60bbf14a838c8c8a1dba98086b223e35fe70a
cve@mitrehttps://github.com/cobbler/cobbler/releases/tag/v3.3.0
af854a3a-2127-422b-91ae-364da2661108https://github.com/cobbler/cobbler/commit/d8f60bbf14a838c8c8a1dba98086b223e35fe70a
af854a3a-2127-422b-91ae-364da2661108https://github.com/cobbler/cobbler/releases/tag/v3.3.0

Affected Packages

(1 across 1 ecosystem)

PyPI(1)

Package	Vulnerable range	Fixed in	Dependents
cobbler	0.6.3-2, 3.1.2, 3.2.1, 3.2.2, 3.2.3	3.3.0	—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-94Improper Control of Generation of Code (Code Injection)

Data Freshness Timeline

(refreshed 2× in last 7d / 5× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 09:37 UTCEG score recompute

Publicly available exploits

(1 reference)

Working exploit code is in the public domain. Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Nucleihttp/cves/2021/CVE-2021-40323.yaml
First seen Jan 1, 2021
Cobbler <3.3.0 - Remote Code Execution
Open source ↗

Frequently asked(5)

What is CVE-2021-40323?

CVE-2021-40323 is a critical vulnerability published on October 4, 2021. Cobbler before 3.3.0 allows log poisoning, and resultant Remote Code Execution, via an XMLRPC method that logs to the logfile for template injection.

When was CVE-2021-40323 disclosed?

CVE-2021-40323 was first published in the National Vulnerability Database on October 4, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-40323 actively exploited?

CVE-2021-40323 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-40323?

CVE-2021-40323 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2021-40323?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-40323, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2021-40323

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CVE-2021-40323

📅 Published

🔄 Last Modified

🔗 References (4)