# CVE-2026-105544: .NET improper access control privilege elevation

Source: https://junglewise.ai/threats/cve-2026-105544-improper-access-control-in-net-allows-an-authorized-attacker-to  
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-2026-105544 · Severity: high · CVSS 7.5 · Published 2026-11-10

.NET is Microsoft's core development framework used to build applications across Windows, web, and cloud environments. An improper access control flaw allows an authorized user with local access to escalate their privileges, potentially gaining administrative control of the system or application. This affects systems running vulnerable versions of .NET.

Technologies: [Microsoft .Net](https://junglewise.ai/threats/technologies/microsoft-net). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-105544 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-105544 being exploited in the wild.

**How severe is CVE-2026-105544?** High severity, with a CVSS score of 7.5, published 10 November 2026.

**Which products and versions are affected?** Microsoft .NET.

**Is there a fix for CVE-2026-105544?** 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-2026-105544 attacked?** It is attacked with local access, in a software library.

**Am I affected by CVE-2026-105544?** Check whether you run Microsoft .Net. 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

An improper access control vulnerability in .NET permits privilege escalation through local attack vector. The flaw requires an authenticated attacker with local system access. A successful exploit allows an attacker to elevate privileges beyond their current authorization level.

## Affected products

- Microsoft .NET

## Timeline

- 2026-11-10: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-105544](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-105544)

## Related threats

- [Microsoft .NET algorithmic complexity denial of service](https://junglewise.ai/threats/cve-2026-120796-inefficient-algorithmic-complexity-in-net-allows-an-unauthorized)
- [.NET inefficient algorithmic complexity denial of service](https://junglewise.ai/threats/cve-2026-118747-inefficient-algorithmic-complexity-in-net-allows-an-unauthorized)
- [.NET framework insecure failure mode security bypass](https://junglewise.ai/threats/cve-2026-118746-not-failing-securely-failing-open-in-net-allows-an-unauthorized)
- [.NET time-of-check time-of-use race condition privilege escalation](https://junglewise.ai/threats/cve-2026-114155-time-of-check-time-of-use-toctou-race-condition-in-net-allows-an)
- [.NET stack-based buffer overflow denial of service](https://junglewise.ai/threats/cve-2026-109475-stack-based-buffer-overflow-in-net-allows-an-unauthorized)