CVE-2018-20160 describes an XML External Entity (XXE) vulnerability in ZxChat, used in Synacor Zimbra Collaboration Suite versions 8.7 and 8.8, allowing attackers to submit crafted XML requests to the mailboxd service. This critical vulnerability, with a CVSS score of 9.8, requires no user interaction or authentication, enabling full compromise of confidentiality, integrity, and availability. Despite its high severity, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 8.7.0, < 8.7.11CPE matchmatch criteria | cpe:2.3:a:synacor:zimbra_collaboration_suite:*:*:*:*:*:*:*:* | ||
>= 8.8.0, < 8.8.9CPE matchmatch criteria | cpe:2.3:a:synacor:zimbra_collaboration_suite:*:*:*:*:*:*:*:* | ||
8.7.11CPE matchmatch criteria | cpe:2.3:a:synacor:zimbra_collaboration_suite:8.7.11:-:*:*:*:*:*:* | ||
8.7.11CPE matchmatch criteria | cpe:2.3:a:synacor:zimbra_collaboration_suite:8.7.11:p1:*:*:*:*:*:* | ||
8.7.11CPE matchmatch criteria | cpe:2.3:a:synacor:zimbra_collaboration_suite:8.7.11:p2:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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.
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 records are not available for this CVE.