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CVE-2022-24682

82
FAUCET Score

CVE-2022-24682 is a cross-site scripting (XSS) vulnerability in the Calendar feature of Zimbra Collaboration Suite versions 8.8.x before 8.8.15 patch 30 (update 1). An attacker can inject arbitrary HTML containing executable JavaScript into element attributes, which then becomes unescaped in the document. This medium-severity vulnerability (CVSS 6.1) has a high EPSS score and FAUCET Risk Score of 100/100, indicating significant exploitability and impact, including potential information disclosure and integrity compromise. It is actively exploited in the wild, with evidence of use in ransomware campaigns, and has garnered substantial community discussion and media coverage, including warnings from CISA. While no Metasploit or ExploitDB modules exist, Nuclei templates are available for detection.

Impacted Technologies

VendorProductVersion(s)CPE
>= 8.8.0, < 8.8.15CPE matchmatch criteria
cpe:2.3:a:synacor:zimbra_collaboration_suite:*:*:*:*:*:*:*:*
8.8.15CPE matchmatch criteria
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:-:*:*:*:*:*:*
8.8.15CPE matchmatch criteria
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p1:*:*:*:*:*:*
8.8.15CPE matchmatch criteria
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p10:*:*:*:*:*:*
8.8.15CPE matchmatch criteria
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p11:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
31.06%
Probability of exploitation in next 30 days
EPSS Percentile
98.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
Added to KEV · Feb 25, 2022
Nuclei: CVE-2022-24682 · Oct 9, 2025
This CVE's current EPSS score of 0.3106 is in the 99th percentile among its peer group of 26,219 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Remediation records are not available for this CVE.

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
blog.zimbra.com / 2022/02/hotfix-available-5-feb-for-zero-day-exploit-vulnerability-in-zimbra-8-8-15
Vendor Advisory
wiki.zimbra.com / wiki/Security_Center
Vendor Advisory
wiki.zimbra.com / wiki/Zimbra_Releases/8.8.15/P30
Release NotesVendor Advisory
wiki.zimbra.com / wiki/Zimbra_Security_Advisories
Vendor Advisory
volexity.com / blog/2022/02/03/operation-emailthief-active-exploitation-of-zero-day-xss-vulnerability-in-zimbra
ExploitThird Party Advisory