Is CVE-2026-45486 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-45486 being exploited in the wild.

How severe is CVE-2026-45486?

High severity, with a CVSS score of 7.8, published 9 June 2026.

Is there a fix for CVE-2026-45486?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-45486 attacked?

It is attacked with local access, in a network appliance.

Am I affected by CVE-2026-45486?

Check whether you run Microsoft Word. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-45486: Microsoft Office Word untrusted pointer dereference

CVE-2026-45486 · Severity: high · CVSS 7.8 · Published 2026-06-09

A security vulnerability exists in Microsoft Word, the widely used word processing application. An attacker could exploit this flaw to run unauthorized code on a user's computer, potentially leading to a full system takeover or theft of sensitive documents. To be successful, the attack typically requires a user to open a specially crafted malicious file.

Technologies: Microsoft Word. Vendors: Microsoft.

Quick answers

Is CVE-2026-45486 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-45486 being exploited in the wild.
How severe is CVE-2026-45486?: High severity, with a CVSS score of 7.8, published 9 June 2026.
Which products and versions are affected?: Microsoft Word.
Is there a fix for CVE-2026-45486?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-45486 attacked?: It is attacked with local access, in a network appliance.
Am I affected by CVE-2026-45486?: Check whether you run Microsoft Word. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A vulnerability classified as an untrusted pointer dereference (and associated with CWE-416 Use After Free) exists in Microsoft Office Word. The flaw allows for local code execution when a victim interacts with a malicious document. The attack vector is local with a low complexity, requiring no special privileges but necessitating user interaction (UI:R). Successful exploitation grants the attacker high impact across confidentiality, integrity, and availability. Microsoft has released information regarding this vulnerability in their security update guide.

Affected products

Microsoft Word

Timeline

2026-06-09: disclosed
2026-06-09: advisory

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45486

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