Vulnerability in Synacor Zimbra_collaboration_suite
CVE-2022-27924
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.
EPSS: 0.854 (99.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
Affected products
- Synacor Zimbra_collaboration_suite — versions 8.8.15, 9.0.0
- N/a — versions n/a
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply updates per vendor instructions.
Known ransomware campaign use: yes.
Public proof-of-concept exploits
References
- cve@mitre.org (x_refsource_MISC, Vendor Advisory)
- cve@mitre.org (x_refsource_MISC, Vendor Advisory)
- cve@mitre.org (x_refsource_MISC, Release Notes, Vendor Advisory)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
Frequently asked questions
- What is CVE-2022-27924?
- CVE-2022-27924 is a high-severity vulnerability in Synacor Zimbra_collaboration_suite, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 7.5/10. Published 2022-04-21.
- How severe is CVE-2022-27924?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2022-27924 known to be exploited?
- Yes. CVE-2022-27924 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-08-04), indicating it is being actively exploited. 7 public proof-of-concept repositories are indexed.