No exploitation reportedFix available

CVE-2023-41106

Q: Is CVE-2023-41106 actively exploited?

Active exploitation of CVE-2023-41106 has not been confirmed. Its EPSS score was 1.0% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2023-41106?

CVE-2023-41106 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

No exploitation reported by the sources we read.

Published2023-12-07
Fixed in10.0.3 · 8.8.15

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

An issue was discovered in Zimbra Collaboration (ZCS) before 10.0.3. An attacker can gain access to a Zimbra account. This is also fixed in 9.0.0 Patch 35 and 8.8.15 Patch 42.

Timeline

dates in UTC

2023-12-0705:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-41106?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-41106?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Zimbra collaboration

Branch	Affected	Fixed in	Source
10.0	≥ 10.0.0, < 10.0.3	10.0.3	NVD
8.8	< 8.8.15	8.8.15	NVD
8.8	= 8.8.15	no fix published	NVD
9.0	= 9.0.0	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Zimbra collaboration to 10.0.3 · 8.8.15

Advisories and patches

wiki.zimbra.comRelease Notes
wiki.zimbra.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.17.5read 2026-10-23
FIRST EPSSEPSS score1.0 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published: 2023-12-07
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2023-41106?

An issue was discovered in Zimbra Collaboration (ZCS) before 10.0.3. An attacker can gain access to a Zimbra account. This is also fixed in 9.0.0 Patch 35 and 8.8.15 Patch 42.

Is CVE-2023-41106 actively exploited?

Active exploitation of CVE-2023-41106 has not been confirmed. Its EPSS score was 1.0% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-41106?

CVE-2023-41106 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

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