KEV Monitor
← Back to catalog

Synacor · Zimbra Collaboration Suite (ZCS)

CVE-2022-27924

Synacor Zimbra Collaboration Suite (ZCS) Command Injection Vulnerability

CISA KEV record

CISA date added
2022-08-04
CISA due date
2022-08-25
Known ransomware use
Known

NVD risk context

7.5 HIGH

CVSS is a technical severity score. CISA’s KEV status remains the evidence that this vulnerability is known to be exploited.

View NVD record ↗
Attack vector
Network
The vulnerable service can be reached remotely over a network.
Attack complexity
Low
Exploitation does not require unusual conditions beyond normal attacker control.
Privileges required
None
The attacker does not need an existing account or privileges.
User interaction
None
No action by another user is required.

Description

Synacor Zimbra Collaboration Suite (ZCS) allows an attacker to inject memcache commands into a targeted instance which causes an overwrite of arbitrary cached entries.

Required action

Apply updates per vendor instructions.

NVD reference index

Vendor and remediation references

NVD has tagged these sources as vendor advisories, patches, mitigations, or release notes.

Other NVD references (1)

MITRE CWE context

CWE classification

CWE-93 Improper Neutralization of CRLF Sequences ('CRLF Injection')

The product uses CRLF (carriage return line feeds) as a special element, e.g. to separate lines or records, but it does not neutralize or incorrectly neutralizes CRLF sequences from inputs.

View official MITRE CWE details ↗

NVD record timing

NVD record timeline

These dates describe NVD’s record, not CISA’s KEV addition or remediation due date.

NVD published
Apr 21, 2022, 12:15 AM UTC
When NVD first published this CVE record.
NVD last updated
Jun 17, 2026, 04:37 AM UTC
When NVD last changed its analysis or record data.
Advanced: view the technical CVSS vector

This standardized code is intended for security tools and technical analysts. The plain-language risk summary above explains its main points.

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

View NVD record ↗

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