# CVE-2026-119857: Microsoft Windows Kernel buffer over-read information disclosure

Source: https://junglewise.ai/threats/cve-2026-119857-buffer-over-read-in-windows-kernel-allows-an-authorized-attacker  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-10. Updated: 2026-11-10  
License: CC BY 4.0 with a link back

CVE-2026-119857 · Severity: medium · CVSS 5.5 · Published 2026-11-10

A buffer over-read vulnerability in the Windows Kernel allows an authorized local attacker to read sensitive information from system memory. An attacker with local access could exploit this to extract confidential data such as passwords, encryption keys, or other protected information stored in kernel memory.

Technologies: [Microsoft Windows Kernel](https://junglewise.ai/threats/technologies/windows-kernel). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-119857 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-119857 being exploited in the wild.

**How severe is CVE-2026-119857?** Medium severity, with a CVSS score of 5.5, published 10 November 2026.

**Which products and versions are affected?** Microsoft Windows Kernel.

**Is there a fix for CVE-2026-119857?** 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-2026-119857 attacked?** It is attacked with local access, in an operating system.

**Am I affected by CVE-2026-119857?** Check whether you run Microsoft Windows Kernel. 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 in the Windows Kernel permits an authenticated local attacker to read beyond allocated memory boundaries, disclosing sensitive kernel memory contents. The vulnerability requires local system access and valid user credentials. Successful exploitation results in information disclosure only, with no impact to system availability or integrity.

## Affected products

- Microsoft Windows Kernel

## Timeline

- 2026-11-10: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-119857](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-119857)

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- [Microsoft Windows Kernel out-of-bounds read privilege escalation](https://junglewise.ai/threats/cve-2026-122183-out-of-bounds-read-in-windows-kernel-allows-an-authorized)