How severe is CVE-2022-27924?

CVE-2022-27924 has a CVSS 3.1 base score of 9.8 (CRITICAL). EPSS estimates a 85.4% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

CVE-2022-27924: Synacor Zimbra Collaboration Suite (ZCS) Command

CISA Known Exploited Vulnerabilities

Synacor Zimbra Collaboration Suite (ZCS) Command Injection Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2022-08-04

Remediation due

2022-08-25

Ransomware

Known use

Required action
Apply updates per vendor instructions.

CISA notes
https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P24.1#Security_Fixes; https://nvd.nist.gov/vuln/detail/CVE-2022-27924

Description

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.

Severity

CVSS 3.1 · CISA9.8 CRITICAL

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

SSVC · CISA-ADP

Exploitationactive

Automatableyes

Technical impacttotal

Affected Products

Vendor	Product	Affected versions
-	-	n/a

References

3 Links

Other references

Record Details

Published

2022-04-20

Last updated

2026-10-01

Assigner (CNA)

mitre

Credited to

CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.