Is CVE-2024-21838 in the CISA KEV catalog?

No. CVE-2024-21838 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2024-21838?

CVE-2024-21838 has a CVSS v3 base score of 6.8 (MEDIUM).

What is the EPSS score for CVE-2024-21838?

CVE-2024-21838 has an EPSS score of 0.30% (22th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2024-21838?

Upgrade command centre to 9.00.1774 or later.

CVE & CISA-KEV Catalog

CVE-2024-21838

MEDIUM

6.8

CVSS v3

NVD

Description

Improper neutralization of special elements in output (CWE-74) used by the email generation feature of the Command Centre Server could lead to HTML code injection in emails generated by Command Centre. This issue affects: Gallagher Command Centre 9.00 prior to vEL9.00.1774 (MR2), 8.90 prior to vEL8.90.1751 (MR3), 8.80 prior to vEL8.80.1526 (MR4), 8.70 prior to vEL8.70.2526 (MR6), all version of 8.60 and prior.

CWE-74Injection CWE-79Cross-Site Scripting (XSS)

How to fix

Remediation Available

command centreNVD

Affected:>= 9.00, < 9.00.1774Fixed in:9.00.1774CVE-2024-21838derived 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 InteractionRequired

ScopeChanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

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

Exploit Intelligence

0.30%probability of exploitation in 30 days

22ndpercentile

Low risk: more likely to be exploited than 22% of all known CVEs.

References

Vendor Advisory1

security.gallagher.com

Related Vulnerabilities

Other CWE-74 (Injection) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2013-2251	Critical	9.8	100%	KEV	Fix
CVE-2023-22527	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2019-2725	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2022-46169	Critical	9.8	100%	KEV	Fix
CVE-2022-35914	Critical	9.8	100%	KEV	-
CVE-2019-17558	High	7.5	99%	KEV	Fix

Embed a live status badge for CVE-2024-21838

Markdown

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HTML

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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 2025-02-10.