Is CVE-2021-23140 in the CISA KEV catalog?

No. CVE-2021-23140 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-23140?

CVE-2021-23140 has a CVSS v3 base score of 9.9 (CRITICAL).

What is the EPSS score for CVE-2021-23140?

CVE-2021-23140 has an EPSS score of 0.85% (54th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-23140?

Upgrade command centre to 8.40.1888 or later.

CVE & CISA-KEV Catalog

CVE-2021-23140

CRITICAL

9.9

CVSS v3

NVD

Description

Improper Authorization vulnerability in Gallagher Command Centre Server allows command line macros to be modified by an unauthorised Command Centre Operator. This issue affects: Gallagher Command Centre 8.40 versions prior to 8.40.1888 (MR3); 8.30 versions prior to 8.30.1359 (MR3); 8.20 versions prior to 8.20.1259 (MR5); version 8.10 and prior versions.

CWE-285

How to fix

Remediation Available

command centreNVD

Affected:>= 8.40, < 8.40.1888Fixed in:8.40.1888CVE-2021-23140derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeChanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityLow

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

Exploit Intelligence

0.85%probability of exploitation in 30 days

54thpercentile

Moderate risk: more likely to be exploited than 54% of all known CVEs.

References

Vendor Advisory1

security.gallagher.com

Related Vulnerabilities

Other CWE-285 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-29927	Critical	9.1	100%	-	Fix
CVE-2021-28799	Critical	10.0	78%	KEV + Ransom	Fix
CVE-2023-32707	High	8.8	74%	-	Fix
CVE-2023-48241	High	7.5	73%	-	Fix
CVE-2023-22480	High	7.3	67%	-	Fix
CVE-2022-3229	Critical	9.8	66%	-	-

Embed a live status badge for CVE-2021-23140

Markdown

[![CVE-2021-23140](https://tridentstack.com/cve/badge/CVE-2021-23140.svg)](https://tridentstack.com/cve/CVE-2021-23140)

HTML

<a href="https://tridentstack.com/cve/CVE-2021-23140"><img src="https://tridentstack.com/cve/badge/CVE-2021-23140.svg" alt="CVE-2021-23140"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.