VulnSocial

CVE-2026-54993Patch(microsoft / windows_10_1809)

LOWCVSS 7.8 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch microsoft windows_10_1809 systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

Heap-based buffer overflow in Microsoft Windows Media Foundation 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.

  • windows_10_1809
  • windows_10_21h2
  • windows_10_22h2
  • windows_11_24h2

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 2 signals
  • Technical details provided in 2 signals
  • Peaked 1d ago at 1 mentions (2026-07-14); latest day: 1
  • 2 total mentions across 2 days

Affected systems

Vendors
microsoft
Products
windows_10_1809windows_10_21h2windows_10_22h2windows_11_24h2windows_11_25h2windows_11_26h1windows_server_2019windows_server_2022windows_server_2025

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-07-14: 1Mentions · 2026-07-20: 1Patch / Workaround · 2026-07-14: 1Patch / Workaround · 2026-07-20: 1Technical Details · 2026-07-14: 1Technical Details · 2026-07-20: 107-1407-20
Signal classification1 categories
Patch
2100.0%
Referenced assets1 URL
Full discourse2 posts
  • DFIR Lab@DFIR_Lab
    Patch

    🚨 HIGH: CVE-2026-54993 (CVSS 7.8) - Heap buffer overflow in Microsoft Windows Media Foundation enables local code execution. User interaction required. Patch immediately. #CVE #PatchNow #ThreatIntel https://t.co/AtclYMKwdn

    Post summary

    The tweet reports a high‑severity heap buffer overflow in Windows Media Foundation (CVE‑2026‑54993), stresses the need for immediate patching, and provides technical details, but offers no PoC, exploit code, or claims of active exploitation.

    0000031
    88 followersView on X
  • Windows Forum@windowsforum
    Patch

    🪟 Malicious media can still turn “just open this file” into remote code execution. CVE-2026-54993 wasn’t exploited—yet. Install July’s Windows updates before attackers add a sequel. https://windowsforum.com/threads/cve-2026-54993-install-july-windows-updates-for-media-rce.438214/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #WindowsSecurity #RemoteCodeExecution #MediaFoundation #July2026Updates https://t.co/wWnemHzdbs

    Post summary

    The message cautions that CVE‑2026‑54993 could enable media‑based RCE and urges installing the July Windows updates to mitigate the risk. The content emphasizes patching rather than exploitation details.

    0000044
    1.2K followersView on X
CPE platform detail17 entries

17 of 17 entries

PartVendorProductVersionTarget SWTarget HW
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_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---
OSmicrosoftwindows_server_2022---
OSmicrosoftwindows_server_2025---

Explore more

Back to dashboardmicrosoft CVEswindows_10_1809 vulnerabilities