CVE-2026-58599
CVE-2026-58599 is a high-severity vulnerability in Microsoft Hevc Video Extensions with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-122.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- EPSS exploit prediction: 0% (38th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-122
- Affected product: Microsoft Hevc Video Extensions
- Published:
- Last modified:
Description
Heap-based buffer overflow in Microsoft Windows Codecs Library allows an unauthorized attacker to execute code locally.
Frequently asked questions
- What is CVE-2026-58599?
- Heap-based buffer overflow in Microsoft Windows Codecs Library allows an unauthorized attacker to execute code locally.
- How severe is CVE-2026-58599?
- CVE-2026-58599 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2026-58599 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-58599?
- CVE-2026-58599 primarily affects Microsoft Hevc Video Extensions. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2026-58599?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2026-58599 published?
- CVE-2026-58599 was published on 2026-09-08 and last updated on 2026-10-01.
References
Affected products (3)
- cpe:2.3:a:microsoft:hevc_video_extensions:*:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:hevc_video_extensions_for_licensed_applications:*:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:hevc_video_extensions_from_device_manufacturer:*:*:*:*:*:*:*:*
More vulnerabilities in Microsoft Hevc Video Extensions
- CVE-2026-58600 — High (CVSS 7.8): Heap-based buffer overflow in Microsoft Windows Codecs Library allows an unauthorized attacker to elevate privileges…
- CVE-2023-38170 — High (CVSS 7.8): HEVC Video Extensions Remote Code Execution Vulnerability
- CVE-2022-30188 — High (CVSS 7.8): HEVC Video Extensions Remote Code Execution Vulnerability
- CVE-2022-29119 — High (CVSS 7.8): HEVC Video Extensions Remote Code Execution Vulnerability
- CVE-2022-29111 — High (CVSS 7.8): HEVC Video Extensions Remote Code Execution Vulnerability
- CVE-2022-22018 — High (CVSS 7.8): HEVC Video Extensions Remote Code Execution Vulnerability
All CVEs affecting Microsoft Hevc Video Extensions →
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- CVE-2026-24822 — Critical (CVSS 10.0): Out-of-bounds Write, Heap-based Buffer Overflow vulnerability in ttttupup wxhelper (src modules). This vulnerability is…
- CVE-2025-23123 — Critical (CVSS 10.0): A malicious actor with access to the management network could execute a remote code execution (RCE) by exploiting a…
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- CVE-2026-10858 — Critical (CVSS 9.9): IBM MQ for HPE NonStop 8.1.0 through 8.1.0.40 could allow an authenticated attacker to cause a denial of service or…
Browse all CWE-122 (Heap-based Buffer Overflow) vulnerabilities →