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CVE-2017-6813

31
FAUCET Score

CVE-2017-6813 describes a critical privilege escalation vulnerability in Zimbra Collaboration Suite (ZCS) versions prior to 8.7.6, where a service fails to enforce necessary privileges for certain operations. With a CVSS score of 9.8 (CRITICAL), this vulnerability allows an unauthenticated attacker to achieve complete compromise of confidentiality, integrity, and availability with low attack complexity over the network. Despite its high severity, there is currently no public exploit code available (Metasploit, Nuclei, ExploitDB), and it is not listed on the CISA KEV catalog, indicating no known active exploitation. Community discussion and media coverage are also minimal.

Impacted Technologies

VendorProductVersion(s)CPE
<= 8.7.5CPE matchmatch criteria
cpe:2.3:a:synacor:zimbra_collaboration_suite:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

CVSS:3.0/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
3.0

Exploit Intelligence

EPSS Score
2.55%
Probability of exploitation in next 30 days
EPSS Percentile
83.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0255 is in the 74th percentile among its peer group of 36,897 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

Patch Available

Vendor Patches (1)

wagopatch availablevia llm_extracted
Fixed in: ['8.6.0 Patch9', '8.7.6']

Vendor Advisories (1)

wagollm-wago-ff961f217b85d341HIGH

Improper handling of privileges

References

wiki.zimbra.com / wiki/Security_Center
Vendor Advisory
wiki.zimbra.com / wiki/Zimbra_Releases/8.7.6
Release Notes
securityfocus.com / bid/98087
Third Party AdvisoryVDB Entry