🚨 [CISA-2026:0318] CISA Adds One Known Exploited Vulnerability to Catalog (https://secdb.nttzen.cloud/security-advisory/detail/CISA-2026:0318)

[secdb@infosec.exchange]

[CISA-2026:0318] CISA Adds One Known Exploited Vulnerability to Catalog (https://secdb.nttzen.cloud/security-advisory/detail/CISA-2026:0318)

CISA has added one new vulnerability to its Known Exploited Vulnerabilities Catalog, based on evidence of active exploitation. These types of vulnerabilities are a frequent attack vector for malicious cyber actors and pose significant risk to the federal enterprise.

️ CVE-2025-66376 (https://secdb.nttzen.cloud/cve/detail/CVE-2025-66376)
- Name: Synacor Zimbra Collaboration Suite (ZCS) Cross-Site Scripting Vulnerability
- Action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- Known To Be Used in Ransomware Campaigns? Unknown
- Vendor: Synacor
- Product: Zimbra Collaboration Suite (ZCS)
- Notes: https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories ; https://nvd.nist.gov/vuln/detail/CVE-2025-66376

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