CVE-2026-45457: Microsoft Word Remote Code Execution Vulnerability
Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to execute code locally.
CSIRTS triage
- What
- Untrusted pointer dereference in Microsoft Office Word allows an unauthorized attacker to execute code locally.
- Who is affected
- Users of Microsoft Word.
- Urgency
- Remediation is urgent due to the high severity and potential for remote code execution.
- Action
- Update Microsoft Word 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-2026-45457
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-2026-454570.37% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 31% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-45457 | coverage & exploitation status | NVD · CVE.org |
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