CVE-2022-24682 on CISA KEV

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

01What CISA says about this vulnerability

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.

02Required action — verbatim from CISA

Apply updates per vendor instructions.

03Notes & references

• wiki.zimbra.com — https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
• wiki.zimbra.com — https://wiki.zimbra.com/wiki/Security_Center
• www.volexity.com — https://www.volexity.com/blog/2022/02/03/operation-emailthief-active-exploitatio…
• blog.zimbra.com — https://blog.zimbra.com/2022/02/hotfix-available-5-feb-for-zero-day-exploit-vuln…
• wiki.zimbra.com — https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.15/P30

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

Vendor	Product	Versions
n	a / n/a	n/a

06Detection

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection:

Open in Sigma generator →