HOMEVULNERABILITIESCVE-2018-15131
MEDIUM

CVE-2018-15131

CWE-200Published: May 30, 2019· Updated: Jun 17, 2026

5.3
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2018-15131 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

From a weakness classification perspective (CWE-200): Information exposure vulnerabilities leak sensitive data to unauthorized actors.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityNone
AvailabilityNone
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected Vendors & Products

synacor1 product(s)
zimbra collaboration suite
Source: NVD CPE · 5 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://bugzilla.zimbra.com/show_bug.cgi?id=109012
ADVISORYhttps://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
ADVISORYhttps://bugzilla.zimbra.com/show_bug.cgi?id=109012

All References (3)

→
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

Quick Facts

CVE IDCVE-2018-15131
CVSS Score5.3 / 10
SeverityMEDIUM
WeaknessCWE-200
CISA KEVNo
Affected1 vendor(s)
PublishedMay 30, 2019

Related CVEs (CWE-200)

CVE-2020-13702
10.0
CVE-2015-0987
10.0
CVE-2017-2320
10.0
CVE-2014-9162
10.0
CVE-2015-2897
10.0
CVE-2022-29165
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2018-15131 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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