# CVE-2026-57979: Microsoft Windows RDP out-of-bounds read information disclosure

Source: https://junglewise.ai/threats/cve-2026-57979-microsoft-windows-rdp-out-of-bounds-read-information-disclosure  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-14. Updated: 2026-07-14  
License: CC BY 4.0 with a link back

CVE-2026-57979 · Severity: medium · CVSS 6.5 · Published 2026-07-14

A security vulnerability exists in the Windows Remote Desktop Protocol (RDP), which is used to remotely access and manage computers. An attacker could exploit this flaw to view sensitive information that they should not have access to. While the attack can be launched over a network, it requires a user to perform a specific action, such as clicking a link or connecting to a malicious server, before the information can be stolen.

Technologies: [Microsoft Windows 11](https://junglewise.ai/threats/technologies/windows-11), [Microsoft Windows Server 2012 R2](https://junglewise.ai/threats/technologies/windows-server-2012-r2), [Microsoft Windows 10](https://junglewise.ai/threats/technologies/windows-10). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-57979 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-57979 being exploited in the wild.

**How severe is CVE-2026-57979?** Medium severity, with a CVSS score of 6.5, published 14 July 2026.

**Which products and versions are affected?** Microsoft Windows 11 24H2, 25H2, 26H1; Microsoft Windows Server 2012 R2 All versions; Microsoft Windows 10 1607, 1809, 21H2, 22H2.

**Is there a fix for CVE-2026-57979?** 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-2026-57979 attacked?** It is attacked over the network, in an operating system.

**Am I affected by CVE-2026-57979?** Check whether you run Microsoft Windows 11, Microsoft Windows Server 2012 R2 or Microsoft Windows 10 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

This vulnerability is classified as an out-of-bounds read (CWE-125) within the Windows Remote Desktop Protocol (RDP) implementation. An unauthenticated attacker can exploit this flaw over the network to disclose sensitive memory contents from the affected system. According to the CVSS vector, the attack has low complexity and requires no special privileges, but it does require user interaction (UI:R) to be successful. Microsoft has released security updates for various versions of Windows 10, Windows 11, and Windows Server 2012 R2 to address this issue.

## Affected products

- Microsoft Windows 10 1607, 1809, 21H2, 22H2
- Microsoft Windows 11 24H2, 25H2, 26H1
- Microsoft Windows Server 2012 R2 All versions

## Timeline

- 2026-07-14: disclosed
- 2026-07-14: advisory

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57979](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57979)

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