# CVE-2026-58599

## Summary

- **CVE ID:** CVE-2026-58599
- **Severity:** HIGH
- **CVSS Score:** 7.8 (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
- **CWE:** CWE-122
- **Published:** Sep 8, 2026
- **Last Modified:** Sep 17, 2026

## Description

Heap-based buffer overflow in Microsoft Windows Codecs Library allows an unauthorized attacker to execute code locally.

## Affected Products

- Microsoft — HEVC Video Extensions (1.0.0)
- Microsoft — HEVC Video Extensions for Licensed Applications (2.0.0.0)
- Microsoft — HEVC Video Extensions from Device Manufacturer (2.0.0.0)

## References

- [CNA](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58599)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.33%
- **EPSS Percentile:** 25.6

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-17._