CVE-2025-48700

Known Exploited Vulnerability Entry External Catalog

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Entry Details

CVE-2025-48700

Confirmed

Yes

2026-04-20 00:00 UTC

Timestamps

2026-04-20

2026-04-20

Scope

KEV entry: Synacor Zimbra Collaboration Suite (ZCS) Cross-site Scripting Vulnerability | Affected: Synacor / Zimbra Collaboration Suite (ZCS) | Description: Synacor Zimbra Collaboration Suite (ZCS) contains a cross-site scripting vulnerability that could allow attackers to execute arbitrary JavaScript within the user's session, potentially leading to unauthorized access to sensitive information. | Required 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. | Due date: 2026-04-23 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories ; https://nvd.nist.gov/vuln/detail/CVE-2025-48700

References
  • {'id': 'CVE-2025-48700', 'url': 'https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2025-48700'}

b1218d5a-93d3-4341-ac99-e0f7a9b130ee

405284c2-e461-4670-8979-7fd2c9755a60

2026-04-20 20:00 UTC

2026-04-20 20:00 UTC

Evidence (1)
Type Source Signal Confidence Details GCVE Metadata
vendor_report cisa-kev successful_exploitation 0.80
View details 
{
  "cwes": [
    "CWE-79"
  ],
  "date_added": "2026-04-20",
  "due_date": "2026-04-23",
  "feed": "CISA Known Exploited Vulnerabilities Catalog",
  "knownRansomwareCampaignUse": "Unknown",
  "product": "Zimbra Collaboration Suite (ZCS)",
  "vendorProject": "Synacor",
  "vulnerabilityName": "Synacor Zimbra Collaboration Suite (ZCS) Cross-site Scripting Vulnerability"
}
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