Overview
Synacor Zimbra Collaboration Suite (ZCS) allows an attacker to inject memcache commands into a targeted instance which causes an overwrite of arbitrary cached entries.
https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P24.1#Security_Fixes; https://nvd.nist.gov/vuln/detail/CVE-2022-27924
Key Details
| Property | Value |
|---|---|
| CVE ID | CVE-2022-27924 |
| Vendor / Product | Synacor — Zimbra Collaboration Suite (ZCS) |
| NVD Published | 2022-04-21 |
| NVD Last Modified | 2025-10-31 |
| CVSS 3.1 Score | 7.5 |
| CVSS 3.1 Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| Severity | HIGH |
| CWE | CWE-74 |
| CISA KEV Added | 2022-08-04 |
| CISA KEV Deadline | 2022-08-25 |
| Known Ransomware Use | ⚠️ Yes |
CVSS 3.1 Breakdown
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
Required Action
CISA BOD 22-01 Deadline: 2022-08-25.
Apply updates per vendor instructions.
Timeline
| Date | Event |
|---|---|
| 2022-08-04 | Added to CISA Known Exploited Vulnerabilities catalog |
| 2022-08-25 | CISA BOD 22-01 remediation deadline |
References
| Resource | Type |
|---|---|
| NVD — CVE-2022-27924 | Vulnerability Database |
| CISA KEV Catalog Entry | US Government |