KEV Entry

CVE-2026-42897

Known Exploited Vulnerability Entry ENISA

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Entry Details
Confirmed Exploited

CVE-2026-42897

2026-08-18 00:00 UTC

Timestamps

2026-08-18

2026-08-18

Scope

Affected: Microsoft / Microsoft Exchange Server | Description: Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network. | Patched since: 2026/05/14 | Exploitation type: unknown | CWEs: CWE-79 | Origin source: CERT.PL | Notes: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42897

References
  • {'id': 'CVE-2026-42897', 'url': 'https://www.cve.org/CVERecord?id=CVE-2026-42897'}
  • {'id': 'EUVD-2026-30343', 'url': 'https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-30343'}
  • {'id': 'source', 'url': 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42897'}

e1dfec39-6693-41f0-8926-9d60e326f972

ENISA
cce329bf-df49-4c6e-a027-80be2e6483bd

2026-08-19 17:43 UTC

2026-08-19 17:43 UTC

Evidence
1
Type Source Signal Confidence Details GCVE Metadata
csirt_report enisa-cnw-kev successful_exploitation 0.75
View details 
{
  "catalog": "ENISA / EU CSIRTs Network (CNW) KEV JSON",
  "cwes": [
    "CWE-79"
  ],
  "dateReported": "2026/08/18",
  "euvd": "EUVD-2026-30343",
  "exploitationType": [
    "unknown"
  ],
  "notes": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42897",
  "originSource": "CERT.PL",
  "patchedSince": "2026/05/14",
  "product": "Microsoft Exchange Server",
  "threatActorsExploiting": [],
  "vendorProject": "Microsoft",
  "vulnerabilityName": ""
}
 -
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