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.

CVSS v3.1 NVD

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

CVSS v3.1 CNA

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

CVSS v2.0 NVD

5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:P/A:N

EPSS

93.91% chance of exploitation in the next 30 days, 100th percentile

CISA KEV

added 2022-08-04, used in ransomware campaigns

Nuclei

high

Published

2022-04-20

Updated

2026-10-01

Nuclei templates (1)

• projectdiscovery/nuclei-templates/blob/main/http/cves/2022/CVE-2022-27924.yaml

Security advisories

• https://wiki.zimbra.com/wiki/Security_Center
• https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P24
• https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories

References

• CVE Record
• NVD entry