VulnSocial

CVE-2026-58599General(microsoft / hevc_video_extensions)

LOWCVSS 7.8 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch microsoft hevc_video_extensions systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

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

microsoft CVEsBack to dashboard
1.0/ 10 priority

Sources & remediation

Patch / fix
Weakness type (CWE)
CWE-122

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • hevc_video_extensions
  • hevc_video_extensions_for_licensed_applications
  • hevc_video_extensions_from_device_manufacturer
  • windows_10_1809

Threat summary

  • Patch or workaround signal is available
  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • General: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-09-08); latest day: 1
  • 2 total mentions across 2 days

Affected systems

Vendors
microsoft
Products
hevc_video_extensionshevc_video_extensions_for_licensed_applicationshevc_video_extensions_from_device_manufacturerwindows_10_1809windows_10_21h2windows_10_22h2windows_11_22h2windows_11_23h2windows_11_24h2windows_11_25h2

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-09-08: 1Mentions · 2026-09-10: 1Patch / Workaround · 2026-09-10: 1Technical Details · 2026-09-10: 109-0809-10
Signal classification2 categories
General
150.0%
Patch
150.0%
Referenced assets4 URLs
Classification over time
DateTotalLabels
2026-09-081
General1
2026-09-101
Patch1
Full discourse2 posts
  • HDW Sec@HDWSec
    Patch

    Fixed in this Patch Tuesday, two vulnerabilities we reported to Microsoft: Raw Image Extension Remote Code Execution Vulnerability (CVE-2026-69649), CVSS 8.8, rated Critical HEVC Video Extensions Remote Code Execution Vulnerability (CVE-2026-58599), CVSS 7.8, rated Critical Both are zero-click. The victim clicks on nothing. Windows calls these codecs by itself as soon as Explorer has to produce a thumbnail or a preview, so displaying a folder is enough for the attacker's file to be parsed. A network share, a saved attachment or a downloads folder will do. https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69649 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58599 All the vulnerabilities we have published are listed here: https://hdwsec.fr/fr/cve/?utm_source=twitter&utm_medium=social&utm_campaign=msrc-codecs-windows #ZeroClick #PatchTuesday #Windows

    Post summary

    Two critical zero‑click remote code execution flaws in Windows codecs have been fixed in the latest Patch Tuesday release, with Microsoft advisory links and technical details provided.

    12030118
    192 followersView on X
  • VulDB 🛡@vuldb
    General

    A new vulnerability with increased severity was disclosed for Microsoft Windows (CVE-2026-58599) https://vuldb.com/vuln/399952

    Post summary

    A new CVE (CVE-2026-58599) has been disclosed with higher severity, but the text provides no further technical details, PoC, or mitigation information.

    00010146
    2.3K followersView on X
CPE platform detail24 entries

24 of 24 entries

PartVendorProductVersionTarget SWTarget HW
Appmicrosofthevc_video_extensions---
Appmicrosofthevc_video_extensions_for_licensed_applications---
Appmicrosofthevc_video_extensions_from_device_manufacturer---
OSmicrosoftwindows_10_1809--x64
OSmicrosoftwindows_10_1809--x86
OSmicrosoftwindows_10_21h2--arm64
OSmicrosoftwindows_10_21h2--x64
OSmicrosoftwindows_10_21h2--x86
OSmicrosoftwindows_10_22h2--arm64
OSmicrosoftwindows_10_22h2--x64
OSmicrosoftwindows_10_22h2--x86
OSmicrosoftwindows_11_22h2--arm64
OSmicrosoftwindows_11_22h2--x64
OSmicrosoftwindows_11_23h2--arm64
OSmicrosoftwindows_11_23h2--x64
OSmicrosoftwindows_11_24h2--arm64
OSmicrosoftwindows_11_24h2--x64
OSmicrosoftwindows_11_25h2--arm64
OSmicrosoftwindows_11_25h2--x64
OSmicrosoftwindows_11_26h1--arm64
OSmicrosoftwindows_11_26h1--x64
OSmicrosoftwindows_server_2019--x64
OSmicrosoftwindows_server_2022--x64
OSmicrosoftwindows_server_2025--x64

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