CVE-2026-45475: Microsoft Office Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
CSIRTS triage
- What
- A heap-based buffer overflow allows unauthorized code execution locally.
- Who is affected
- Users of Microsoft Office.
- Urgency
- Remediation is high urgency due to the high severity and potential for exploitation.
- Action
- Update Microsoft Office to the latest version.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45475
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-454750.46% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 38% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-45475 | coverage & exploitation status | NVD · CVE.org |
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