[KEV] Cross-Site Scripting (XSS) in Synacor Zimbra Collaborate Suite (ZCS) (CVE-2022-24682)
Summary
Cross-site scripting in Synacor Zimbra Collaborate Suite (ZCS) (CVE-2022-24682). Risk of unauthorized operations or information disclosure. Listed in CISA KEV — actively exploited.
Original description
The description as published by the source.
Synacor Zimbra Collaboration Suite (ZCS) contains a cross-site scripting (XSS) vulnerability in the Calendar feature that allows an attacker to execute arbitrary code.
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2022-24682 has been found in Synacor Zimbra Collaborate Suite (ZCS).
Risk of unauthorized operations or information disclosure. CVSS score: 6.1/10.
Note: CISA has officially confirmed this is actively exploited in the wild. Treat it with elevated urgency.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Synacor Zimbra Collaborate Suite (ZCS) CVE-2022-24682" on the vendor's site.
CVE-2022-24682 (Synacor Zimbra Collaborate Suite (ZCS)) — CWE-79 / CVSS v3 6.1
Attack vector: remote (network-reachable) / unauthenticated
Listed in CISA KEV — actively exploited, treat as top priority.
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
Cross-site scripting (XSS) (CWE-79) exists in Synacor Zimbra Collaborate Suite (ZCS).
Check the vendor advisory for the affected versions of Synacor Zimbra Collaborate Suite (ZCS).
Severity: Medium (CVSS 6.1/10). Risk of unauthorized operations or information disclosure. Listed in CISA KEV — actively exploited in the wild, treat as top priority.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで Synacor Zimbra Collaborate Suite (ZCS) を使っているサービスとバージョンを洗い出す。
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2Consider incident declaration escalate
Notify SOC / on-callCISA KEV登録済 = 実環境で悪用が観測されている。侵入の兆候があればインシデント対応宣言、無くてもパッチ適用までWAF強化を最優先で。
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3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
References
- advisory NVD
- exploit volexity.com
- patch blog.zimbra.com
- patch wiki.zimbra.com
- patch wiki.zimbra.com
- patch wiki.zimbra.com
- web cisa.gov