CVE-2026-68890: Microsoft Standard XPS heap-based buffer overflow

CVE-2026-68890 · Severity: high · CVSS 7.8 · Published 2026-09-08

Microsoft Standard XPS is a document format handler used across Microsoft Office and Windows systems for reliable document viewing and exchange. A heap-based buffer overflow vulnerability allows an authorized local user to execute arbitrary code with elevated privileges, potentially leading to full system compromise or data theft.

Technologies: Microsoft Standard XPS. Vendors: Microsoft.

Quick answers

Is CVE-2026-68890 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-68890 being exploited in the wild.
How severe is CVE-2026-68890?
High severity, with a CVSS score of 7.8, published 8 September 2026.
Which products and versions are affected?
Microsoft Standard XPS.
Is there a fix for CVE-2026-68890?
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-2026-68890 attacked?
It is attacked with local access.
Am I affected by CVE-2026-68890?
Check whether you run Microsoft Standard XPS. 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

The vulnerability is a heap-based buffer overflow in Microsoft Standard XPS, triggered during document processing when insufficient bounds checking is performed on user-controlled input. The attack requires local access and elevated user privileges to exploit. Successful exploitation allows an attacker to corrupt heap memory, overwrite critical data structures, and execute arbitrary code in the context of the affected process, resulting in privilege escalation to system or administrative level. A patch is expected from Microsoft; check the Security Update Guide for availability and deployment status.

Affected products

  • Microsoft Standard XPS

Timeline

  • 2026-09-08: disclosed

References

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