Is CVE-2022-27924 in the CISA KEV catalog?

Yes. CVE-2022-27924 is on the CISA Known Exploited Vulnerabilities list, added 2022-08-04, and has known ransomware campaign use.

What is the CVSS severity of CVE-2022-27924?

CVE-2022-27924 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2022-27924?

CVE-2022-27924 has an EPSS score of 84.59% (100th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2022-27924

HIGHCISA KEVEPSS 100th pctl

7.5

CVSS v3

NVD

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.

CWE-74

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

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

Exploit Intelligence

84.59%probability of exploitation in 30 days

100thpercentile

Very high risk: more likely to be exploited than 100% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Synacor Zimbra Collaboration Suite (ZCS) Command Injection Vulnerability

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

Apply updates per vendor instructions.

Remediation due: 2022-08-25

Associated with ransomware campaigns

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-10-31.