01 Record

CVE-2022-24682

An issue was discovered in the Calendar feature in Zimbra Collaboration Suite 8.8.x before 8.8.15 patch 30 (update 1), as exploited in the wild starting in December 2021. An attacker could place HTML

MediumKEVPUBLISHEDCNA: mitre

CNA base score6.1 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

View raw JSON

02 Description

An issue was discovered in the Calendar feature in Zimbra Collaboration Suite 8.8.x before 8.8.15 patch 30 (update 1), as exploited in the wild starting in December 2021. An attacker could place HTML

03 Exploitation and scoring

Exploitation

Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2022-02-25. Federal remediation due 2022-03-11. Known ransomware campaign use: reported by CISA.

SSVC decision

ExploitationactiveCISA reports credible evidence of active exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

30.93% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 98.0% of scored records. A rank, not a probability.

NVD base score

6.1 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Analyzed. NVD last modified this record on 2026-08-07.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2022-02-09 03:19Z4 YR AGO

Last updated

2026-08-07 03:55Z2 MO AGO

Reserved

2022-02-09

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Medium (CVSS 6.1)

CNA CVSS vector

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

Weaknesses

CWE-116Improper Encoding or Escaping of OutputClass

Data version

5.2

Document digest

963da7fc24796f0baf48afe7cb8b535d77f61aa9d4c2d7483b6e88c71eadde1a

05 Affected products

VendorProductVersionsPlatforms

synacorzimbra_collaboration_suiteNot specified—

06 References

wiki.zimbra.comhttps://wiki.zimbra.com/wiki/Zimbra_Security_Advisoriesx_refsource_MISC
wiki.zimbra.comhttps://wiki.zimbra.com/wiki/Security_Centerx_refsource_MISC
www.volexity.comhttps://www.volexity.com/blog/2022/02/03/operation-emailthief-active-exploitation-of-zero-day-xss-vulnerability-in-zimbra/x_refsource_MISC
blog.zimbra.comhttps://blog.zimbra.com/2022/02/hotfix-available-5-feb-for-zero-day-exploit-vulnerability-in-zimbra-8-8-15/x_refsource_MISC
wiki.zimbra.comhttps://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.15/P30x_refsource_MISC
www.cisa.govhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-24682government-resource