Is CVE-2022-27926 actively exploited?

Yes. CVE-2022-27926 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, which means exploitation in the wild has been confirmed.

Can CVE-2022-27926 be exploited remotely?

The attack vector of CVE-2022-27926 has not been classified yet.

What is the CVSS score of CVE-2022-27926?

CVE-2022-27926 has not received a CVSS score yet.

HOME VULNERABILITIESCVE-2022-27926

HIGHCISA KEVIN THE WILD

CVE-2022-27926

Published: April 3, 2023

EPSS:94.25%probability of exploitation in 30 daysPercentile:99.9th

Official Description

Synacor Zimbra Collaboration Suite (ZCS) contains a cross-site scripting vulnerability by allowing an endpoint URL to accept parameters without sanitizing.

NVD Source

CISA KEV Advisory

Synacor Zimbra Collaboration Suite (ZCS) Cross-Site Scripting (XSS) Vulnerability

Synacor Zimbra Collaboration Suite (ZCS) contains a cross-site scripting vulnerability by allowing an endpoint URL to accept parameters without sanitizing.

Added to KEV: 2023-04-03Federal patch deadline: 2023-04-24

Required Action (CISA)

Apply updates per vendor instructions.

Risk Analysis

This cross-site scripting (XSS) vulnerability in Synacor Zimbra Collaboration Suite (ZCS) allows an attacker to inject malicious scripts into web pages due to improper sanitization of URL parameters. The very high EPSS score of 0.94248 indicates a strong likelihood of exploitation, and its inclusion in the KEV confirms it is actively exploited.

This vulnerability is actively exploited in the wild, meaning that functional exploits are available and being used by threat actors. This flaw is remotely exploitable.

Recommended Action

Apply the latest security updates for Synacor Zimbra Collaboration Suite. Implement robust input validation and output encoding for all user-supplied data to prevent XSS attacks.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2022-27926 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CISA has added CVE-2022-27926 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.