# CVE-2026-119948: Microsoft Windows Active Directory stack-based buffer overflow

Source: https://junglewise.ai/threats/cve-2026-119948-stack-based-buffer-overflow-in-windows-active-directory-allows  
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-2026-119948 · Severity: high · CVSS 7.5 · Published 2026-11-10

Windows Active Directory, the authentication and identity management system used by organizations worldwide, contains a stack-based buffer overflow vulnerability that allows an authorized network attacker to execute arbitrary code with system privileges. An attacker with valid credentials could exploit this to compromise an organization's entire network infrastructure and gain persistent control over critical systems.

Technologies: [Microsoft Windows Active Directory](https://junglewise.ai/threats/technologies/windows-active-directory). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-119948 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-119948 being exploited in the wild.

**How severe is CVE-2026-119948?** High severity, with a CVSS score of 7.5, published 10 November 2026.

**Which products and versions are affected?** Microsoft Windows Active Directory.

**Is there a fix for CVE-2026-119948?** 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-2026-119948 attacked?** It is attacked over the network, in an operating system.

**Am I affected by CVE-2026-119948?** Check whether you run Microsoft Windows Active Directory. 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 stack-based buffer overflow in Windows Active Directory permits remote code execution via the network when an authorized attacker supplies specially crafted input. The vulnerability requires valid credentials to trigger but allows the attacker to execute code with Active Directory privileges once exploited. No public exploit is currently known to be in active use.

## Affected products

- Microsoft Windows Active Directory

## Timeline

- 2026-11-10: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-119948](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-119948)

## Related threats

- [Windows Active Directory command injection privilege escalation](https://junglewise.ai/threats/cve-2026-123387-improper-neutralization-of-special-elements-used-in-a-command)
- [Microsoft Windows Active Directory denial of service](https://junglewise.ai/threats/cve-2026-105559-no-cwe-for-this-issue-in-windows-active-directory-allows-an)
- [Microsoft Windows Active Directory inadequate encryption strength bypass](https://junglewise.ai/threats/cve-2026-65777-microsoft-windows-active-directory-inadequate-encryption-strength)