CVE-2021-31324

CRITICALNVD 9.89.8—Elevated

9.8

The unprivileged user portal part of CentOS Web Panel is affected by a Command Injection vulnerability leading to root Remote Code Execution.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 99.3%
KEV: Not listed

Published

May 18, 2021

Last Modified

November 21, 2024

Advisory Details (1)

Auto-updated May 26, 2026

🔬 Proof of concept available. No patch confirmed yet.

generic🟡 PoC Available

Shielder - CentOS Web Panel idsession root Remote Code Execution

https://www.shielder.it/advisories/centos-web-panel-idsession-root-rce/

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 1× in last 7d / 7× 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
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 16:24 UTCEG score recompute
2026-05-26 16:24 UTCGHSA enrichment

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-2021-31324.yaml
First seen Jan 1, 2021
CentOS Web Panel - OS Command Injection
Open source ↗

Frequently asked(5)

What is CVE-2021-31324?

CVE-2021-31324 is a critical vulnerability published on May 18, 2021. The unprivileged user portal part of CentOS Web Panel is affected by a Command Injection vulnerability leading to root Remote Code Execution.

When was CVE-2021-31324 disclosed?

CVE-2021-31324 was first published in the National Vulnerability Database on May 18, 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-2021-31324 actively exploited?

CVE-2021-31324 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-31324?

CVE-2021-31324 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2021-31324?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-31324, 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-2021-31324

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Is Your Infrastructure Affected by CVE-2021-31324?

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CVE-2021-31324

📅 Published

🔄 Last Modified

📋 Advisory Details (1)