# CVE-2026-119383: Microsoft Windows Smart Card privilege escalation

Source: https://junglewise.ai/threats/cve-2026-119383-use-of-uninitialized-resource-in-windows-smart-card-allows-an  
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-2026-119383 · Severity: medium · CVSS 6.6 · Published 2026-11-10

Windows Smart Card, a feature used for secure authentication and identity verification, contains a flaw that allows an authorized attacker with physical access to a smart card reader to escalate privileges on the system. An attacker exploiting this could gain elevated system access even without administrative credentials.

Technologies: [Microsoft Windows Smart Card](https://junglewise.ai/threats/technologies/windows-smart-card). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-119383 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-119383 being exploited in the wild.

**How severe is CVE-2026-119383?** Medium severity, with a CVSS score of 6.6, published 10 November 2026.

**Which products and versions are affected?** Microsoft Windows Smart Card.

**Is there a fix for CVE-2026-119383?** 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-2026-119383 attacked?** It is attacked with physical access.

**Am I affected by CVE-2026-119383?** Check whether you run Microsoft Windows Smart Card. 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

Use of an uninitialized resource in the Windows Smart Card subsystem permits privilege escalation through a physical attack vector. The vulnerability requires the attacker to have an authorized smart card and access to a card reader connected to the target system, after which they can elevate their privileges. A fix is available from Microsoft.

## Affected products

- Microsoft Windows Smart Card

## Timeline

- 2026-11-10: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-119383](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-119383)

## Related threats

- [Microsoft Windows Smart Card heap buffer overflow](https://junglewise.ai/threats/cve-2026-118144-heap-based-buffer-overflow-in-windows-smart-card-allows-an)
- [Windows Smart Card heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-112794-heap-based-buffer-overflow-in-windows-smart-card-allows-an)
- [Microsoft Windows Smart Card privilege escalation via untrusted search path](https://junglewise.ai/threats/cve-2026-69785-microsoft-windows-smart-card-privilege-escalation-via-untrusted)