CVE-2022-27924
high CISA KEVSynacor Zimbra Collaboration Suite (ZCS) Command Injection Vulnerability
Vendor / product: Synacor — Zimbra Collaboration Suite (ZCS)
Zimbra Collaboration (aka ZCS) 8.8.15 and 9.0 allows an unauthenticated attacker to inject arbitrary memcache commands into a targeted instance. These memcache commands becomes unescaped, causing an overwrite of arbitrary cached entries.
CVSS
7.5
7.5 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2022-04-21 00:15
Modified: 2026-10-02 14:55
NVD status: Analyzed
Last synced 2 days ago
Verified against the source API 2026-10-27 07:07 UTC
Exploitation
Listed in CISA KEV
Added 2022-08-04 · due 2022-08-25
Known ransomware use: Known
Required action (CISA)
Apply updates per vendor instructions.
Affected products
synacor / zimbra_collaboration_suite 8.8.15, 9.0.0
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://wiki.zimbra.com/wiki/Security_Center
Vendor advisory: https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P24
Vendor advisory: https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
Vendor advisory: https://wiki.zimbra.com/wiki/Security_Center
Vendor advisory: https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P24
Vendor advisory: https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
References
- https://wiki.zimbra.com/wiki/Security_Center cve@mitre.org
- https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P24 cve@mitre.org
- https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories cve@mitre.org
- https://wiki.zimbra.com/wiki/Security_Center af854a3a-2127-422b-91ae-364da2661108
- https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P24 af854a3a-2127-422b-91ae-364da2661108
- https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories af854a3a-2127-422b-91ae-364da2661108
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-27924 134c704f-9b21-4f2e-91b3-4a467353bcc0
Data sources
CISA KEV — fetched 2026-10-27 06:50 UTC · record ↗
NVD CVE API 2.0 — fetched 2026-10-27 07:07 UTC · record ↗