Is It On KEV?

Synacor Zimbra Collaborate Suite (ZCS)

YES - ON THE CISA KEV LIST
CVE-2022-24682

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

CISA catalog due date2022-03-11
overdue since 2022-03-11
EPSS exploit probability (next 30 days)30.9% · 98percentile
From CVE publication to KEV listing16 days (2022-02-09 → 2022-02-25)
Remediation window (KEV listing to due date)14 days
Days on the KEV list1720 days
Date added to KEV2022-02-25
Known ransomware campaign useKnown
VendorSynacor
ProductZimbra Collaborate Suite (ZCS)
Weaknesses (CWE)CWE-79, CWE-116

Synacor: 19 entries (1.1% of all KEV entries are from this vendor); 5 added in 2026.

BOD 26-04 note: this is the date printed in the CISA catalog. A federal agency's actual deadline is set by its SSVC tier - Act (3 days), Attend (14 days), Track (60 days), or the next scheduled upgrade - counted from the KEV listing date or the date the vulnerability is identified in its environment, whichever comes first. Use the tier helper on each CVE page for your own window.

Your BOD 26-04 window (SSVC tier helper)

Your remediation window ends:

Description

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

Required action (CISA)

Apply updates per vendor instructions.

Notes

https://nvd.nist.gov/vuln/detail/CVE-2022-24682

References

Other KEV entries for this vendor: Synacor

Synacor - Vendors with KEV entries

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