Is CVE-2026-83719 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-83719 being exploited in the wild.

How severe is CVE-2026-83719?

Medium severity, with a CVSS score of 5.5, published 13 October 2026.

Is there a fix for CVE-2026-83719?

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-2026-83719 attacked?

It is attacked with local access.

Am I affected by CVE-2026-83719?

Check whether you run Microsoft Windows Servicing Stack Updates at an affected version. 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-2026-83719: Microsoft Windows Servicing Stack Updates buffer over-read

CVE-2026-83719 · Severity: medium · CVSS 5.5 · Published 2026-10-13

Windows Servicing Stack Updates, a core Windows maintenance component, contains a buffer over-read vulnerability that allows an authorized local user to read sensitive data from system memory. While exploitation requires local access and user privileges, a successful attack could expose confidential information such as cryptographic keys or other sensitive data stored in memory.

Technologies: Microsoft Windows Servicing Stack Updates. Vendors: Microsoft.

Quick answers

Is CVE-2026-83719 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-83719 being exploited in the wild.
How severe is CVE-2026-83719?: Medium severity, with a CVSS score of 5.5, published 13 October 2026.
Which products and versions are affected?: Microsoft Windows Servicing Stack Updates <UNKNOWN>.
Is there a fix for CVE-2026-83719?: 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-2026-83719 attacked?: It is attacked with local access.
Am I affected by CVE-2026-83719?: Check whether you run Microsoft Windows Servicing Stack Updates at an affected version. 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 buffer over-read flaw exists in Windows Servicing Stack Updates that permits an authenticated local attacker to read out-of-bounds memory. The vulnerability requires local system access and elevated or user-level privileges to trigger. Successful exploitation results in information disclosure from kernel or process memory.

Affected products

Microsoft Windows Servicing Stack Updates <UNKNOWN>

Timeline

2026-10-13: disclosed

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83719

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.