Is CVE-2022-24682 in the CISA KEV catalog?

Yes. CVE-2022-24682 is on the CISA Known Exploited Vulnerabilities list, added 2022-02-25, and has known ransomware campaign use.

What is the CVSS severity of CVE-2022-24682?

CVE-2022-24682 has a CVSS v3 base score of 6.1 (MEDIUM).

What is the EPSS score for CVE-2022-24682?

CVE-2022-24682 has an EPSS score of 31.06% (98th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-24682?

Upgrade zimbra collaboration suite to 8.8.15 or later.

CVE & CISA-KEV Catalog

CVE-2022-24682

MEDIUMCISA KEVEPSS 98th pctl

6.1

CVSS v3

NVD

Description

An issue was discovered in the Calendar feature in Zimbra Collaboration Suite 8.8.x before 8.8.15 patch 30 (update 1), as exploited in the wild starting in December 2021. An attacker could place HTML containing executable JavaScript inside element attributes. This markup becomes unescaped, causing arbitrary markup to be injected into the document.

CWE-116

How to fix

Remediation Available

zimbra collaboration suiteNVD

Affected:>= 8.8.0, < 8.8.15Fixed in:8.8.15CVE-2022-24682derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

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 RequiredNone

User InteractionRequired

ScopeChanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

31.06%probability of exploitation in 30 days

98thpercentile

Very high risk: more likely to be exploited than 98% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Synacor Zimbra Collaborate Suite (ZCS) Cross-Site Scripting Vulnerability

Synacor Zimbra Collaboration Suite (ZCS) contains a cross-site scripting (XSS) vulnerability in the Calendar feature that allows an attacker to execute arbitrary code.

Apply updates per vendor instructions.

Remediation due: 2022-03-11

Associated with ransomware campaigns

References

Exploit1

volexity.com

Vendor Advisory4

Government Resource1

cisa.gov

Related Vulnerabilities

Other CWE-116 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-38475	Critical	9.1	100%	KEV	Fix
CVE-2022-36446	Critical	9.8	96%	-	Fix
CVE-2021-31806	Medium	6.5	96%	-	Fix
CVE-2022-30781	High	7.5	88%	-	Fix
CVE-2022-36099	Critical	9.9	76%	-	Fix
CVE-2022-36100	Critical	9.9	74%	-	Fix

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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 2025-11-04.