CISA KEV entry
CVE-2022-27924Synacor Zimbra Collaboration Suite (ZCS) Command Injection Vulnerability
Synacor Zimbra Collaboration Suite (ZCS). Added to the CISA Known Exploited Vulnerabilities catalogue on 4 August 2022.
Data status: a source is stale
Last synced CISA catalogue version 2026.11.04 (released 4 November 2026) 1,768 entries Updated manually
- Date added
- 2022-08-04
- Federal due date
- 2022-08-25 21 days after it was added; passed at the sync of 2026-11-05
- Known ransomware use
- Known
- Forensic triage (BOD 26-04)
- No
- CVSS
- 7.5 High CVSS 3.1, scored by nvd@nist.gov
- EPSS
- 93.90% percentile 99.8, scored 2026-11-04
- CISA SSVC
- Exploitation active, automatable yes, technical impact total
- NVD status
- Analyzed published 2022-04-21, 105 days before the KEV listing
BOD 26-04 remediation window
With CISA's SSVC answers for this CVE (automatable: yes, technical impact: total), BOD 26-04 Table 1 gives 3 days and forensic triage on a publicly exposed asset (row 1) and 3 days and forensic triage on an asset that is not publicly exposed (row 9) S06. The catalogue due date, 21 days after the date added, was set before BOD 26-04 took effect on 10 June 2026 S06. The directive binds US federal civilian executive branch agencies only.
What CISA says
Short 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.
Notes
https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P24.1#Security_Fixes; https://nvd.nist.gov/vuln/detail/CVE-2022-27924
CWE in the catalogue
CWE-93
Official links
- CISA KEV catalogue entry cisa.gov
- NVD record nvd.nist.gov
Vendor advisory and patch links
References NVD tags Vendor Advisory or Patch, exactly as NVD lists them.
- https://wiki.zimbra.com/wiki/Security_Center Vendor Advisory
- https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P24 Release Notes, Vendor Advisory
- https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories Vendor Advisory
Links in CISA's notes
NVD details
- CWE (NVD)
- CWE-74 by nvd@nist.gov
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N- CVSS versions in NVD
- V2, V31
- Last modified in NVD
- 2026-10-02T14:55:01.717
Where each value comes from
| Field | Source | Fetched, UTC | State |
|---|---|---|---|
| Catalogue fields | CISA KEV JSON, version 2026.11.04 | 2026-11-05 11:38 | current |
| NVD published, status, CVSS, CWE, vendor links | NVD CVE API 2.0; CVSS: NVD (nvd@nist.gov) | 2026-11-03 12:37 | current at 2026-11-05 11:38 |
| EPSS | FIRST EPSS API, scores of 2026-11-04 | 2026-11-05 11:38 | current |
| CISA SSVC | CISA ADP (via NVD), record of 2026-08-04 | 2026-11-03 12:37 | current |
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