CVE-2022-27924

Act now ● On CISA KEV — actively exploited used in ransomware

Actively exploited — on the CISA KEV list.

CVSS base

7.5 HIGH

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

EPSS — probability of exploitation (30 days)

85.4%

99.7th percentile

CISA KEV

Listed

Added 2022-08-04 · patch by 2022-08-25

Weakness / dates

CWE-74

Published 2022-04-21 · modified 2026-08-04

CVSS breakdown

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

Attack Vector	N	Network
Attack Complexity	L	Low
Privileges Required	N	None
User Interaction	N	None
Scope	U	Unchanged
Confidentiality	N	None
Integrity	H	High
Availability	N	None

Timeline

2022-04-21 — Published (NVD)
2022-08-04 — Added to CISA KEV (actively exploited)
2022-08-25 — CISA patch-by deadline
2026-08-04 — Last modified (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.

Affected

synacor

References

Official: NVD · CVE.org