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CVE-2023-29381

26
FAUCET Score

CVE-2023-29381 is a critical vulnerability affecting Zimbra Collaboration (ZCS) versions 8.8.15 and 9.0, allowing remote attackers to escalate privileges and access sensitive information through manipulation of password and 2FA parameters. With a CVSS score of 9.8, it presents a severe risk due to its network-based attack vector, low attack complexity, and high potential for confidentiality, integrity, and availability impacts. While no active exploits, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion have been observed, its high FAUCET Risk Score of 81/100 warrants attention.

Impacted Technologies

VendorProductVersion(s)CPE
8.8.15CPE matchmatch criteria
cpe:2.3:a:zimbra:collaboration:8.8.15:-:*:*:*:*:*:*
8.8.15CPE matchmatch criteria
cpe:2.3:a:zimbra:collaboration:8.8.15:p1:*:*:*:*:*:*
8.8.15CPE matchmatch criteria
cpe:2.3:a:zimbra:collaboration:8.8.15:p10:*:*:*:*:*:*
8.8.15CPE matchmatch criteria
cpe:2.3:a:zimbra:collaboration:8.8.15:p11:*:*:*:*:*:*
8.8.15CPE matchmatch criteria
cpe:2.3:a:zimbra:collaboration:8.8.15:p12:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.02%
Probability of exploitation in next 30 days
EPSS Percentile
59.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0102 is in the 45th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

wiki.zimbra.com / wiki/Security_Center
Release NotesVendor Advisory
wiki.zimbra.com / wiki/Zimbra_Responsible_Disclosure_Policy
Not Applicable