ctrlINT What the industry said about every indicator, with the quote

CVE-2025-66376Vulnerability

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

Exploited in the wildCISA added it to its Known Exploited Vulnerabilities list on .

Reported by 2 independent sources · first reported by Infosecurity Magazine · last reported

Last reported 2 months ago

CISA KEVAdded 18 Mar 2026
Fix due 1 Apr 2026
Used by ransomware: not knownCISA KEV catalogue
EPSS20.2%
higher than 97% of CVEsFIRST EPSS, as of 23 Oct 2026

What the reports say

2 reports, newest first · the exact sentence from each

  1. “CVE-2025-66376”

    Recorded FutureVendor
    July 2026 CVE Landscape

  2. “The Laundry Bear campaign exploits a zero-day vulnerability in ZCS (CVE-2025-66376) which was publicly disclosed in November 2025 and uses a zero-click exploit coined “beehive” to steal emails and other sensitive data.”

    Infosecurity MagazineNews
    Russian Hackers Exploit New ‘Zero-Click’ Attack Against Western Organizations

Indicators reported together

named in the same reports

Also named with it: CVE-2025-49113, CVE-2026-33824, CVE-2024-42009, CVE-2026-15409, CVE-2026-15410, CVE-2026-25089, CVE-2026-39808, CVE-2026-42897, CVE-2025-55182, CVE-2018-0802, CVE-2026-50522, CVE-2026-58644, CVE-2025-3248, CVE-2008-4128, CVE-2017-17215, CVE-2021-4034, CVE-2021-27137, CVE-2023-4346, CVE-2025-68686, CVE-2026-0770

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