CVE-2026-55035
Actively exploited. CVE-2026-55035 is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.
Multiple vulnerabilities have been discovered in Microsoft products. Some of them allow an attacker to cause remote arbitrary code execution, privilege escalation, and remote denial of service. Microsoft states that the vulnerability...
CSIRTS triage
- What
- Multiple vulnerabilities allow remote arbitrary code execution, privilege escalation, and remote denial of service.
- Who is affected
- All deployments of affected Microsoft products.
- Urgency
- Remediation is urgent due to active exploitation and potential severity.
- Action
- Apply the latest security updates from Microsoft.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 42% of all EPSS-scored CVEs.
Advisory coverage (7)
- unknownexploitedNCSC-2026-0237 [1.02] [H/H] Vulnerabilities Fixed in Microsoft Officencsc-nl · 2026-07-21
- unknownexploitedNCSC-2026-0237 [1.01] [H/H] Vulnerabilities fixed in Microsoft Officencsc-nl · 2026-07-17
- unknownMultiple vulnerabilities in Microsoft products (July 15, 2026)cert-fr-avis · 2026-07-15
- unknownMultiple vulnerabilities in Microsoft Office (July 15, 2026)cert-fr-avis · 2026-07-15
- unknownexploitedNCSC-2026-0237 [1.00] [M/H] Vulnerabilities fixed in Microsoft Officencsc-nl · 2026-07-14
- mediumCVE-2026-55035: Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information…nvd · 2026-07-14
- mediumCVE-2026-55035: Microsoft Office Information Disclosure Vulnerabilitymsrc · 2026-07-14
External references
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