CVE-2018-15131

Name: CVE-2018-15131
Creator: NVD / NIST
Published: 2019-05-30T16:29:00.98+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.86%

Last modified Jun 17, 2026

CVE-2018-15131 is a vulnerability of currently unknown severity. An issue was discovered in Synacor Zimbra Collaboration Suite 8.6.x before 8.6.0 Patch 11, 8.7.x before 8.7.11 Patch 6, 8.8.x before 8.8.8 Patch 9, and 8.8.9 before 8.8.9 Patch 3. Account number enumeration is possible via inconsistent responses for specific types of authentication requests.. EPSS estimates a 1.86% chance of exploitation in the next 30 days.

Description

An issue was discovered in Synacor Zimbra Collaboration Suite 8.6.x before 8.6.0 Patch 11, 8.7.x before 8.7.11 Patch 6, 8.8.x before 8.8.8 Patch 9, and 8.8.9 before 8.8.9 Patch 3. Account number enumeration is possible via inconsistent responses for specific types of authentication requests.

Metrics

EPSS Probability

1.86%

76.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Synacor	Zimbra Collaboration Suite	>= 8.7.0, < 8.7.11
Synacor	Zimbra Collaboration Suite	>= 8.8.0, < 8.8.8
Synacor	Zimbra Collaboration Suite	8.6.0
Synacor	Zimbra Collaboration Suite	8.7.11
Synacor	Zimbra Collaboration Suite	8.8.8
Synacor	Zimbra Collaboration Suite	8.8.9

References

https://bugzilla.zimbra.com/show_bug.cgi?id=109012Exploit, Issue Tracking, Third Party Advisory
https://wiki.zimbra.com/wiki/Zimbra_Security_AdvisoriesVendor Advisory
https://bugzilla.zimbra.com/show_bug.cgi?id=109012Exploit, Issue Tracking, Third Party Advisory

Timeline

Published: May 30, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-15131?

How severe is CVE-2018-15131?

Severity scoring for CVE-2018-15131 is pending analysis. The EPSS model estimates a 1.86% probability of exploitation in the next 30 days.

How do I fix CVE-2018-15131?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-15131?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST