VulnSocial

CVE-2026-49173Patch(microsoft / windows_11_26h1)

LOWCVSS 7.8 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch microsoft windows_11_26h1 systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.

microsoft CVEsBack to dashboard
0.5/ 10 priority

Sources & remediation

Patch / fix
Weakness type (CWE)
CWE-416

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Are you affected?

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

  • windows_11_26h1

Threat summary

  • Patch or workaround signal is available
  • 1 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • 1 total mentions across 1 day

Affected systems

Vendors
microsoft
Products
windows_11_26h1

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-07-22: 1Patch / Workaround · 2026-07-22: 1Technical Details · 2026-07-22: 107-22
Signal classification1 categories
Patch
1100.0%
Full discourse1 post
  • くろん｜情シスAIラボ@josys_AI_labo
    Patch

    Windows 11 26h1、カーネルに Use after free。 CVE-2026-49173、CVSS 7.8（重要）。 ローカルで権限昇格される可能性。 対象は 10.0.28000.2269 以前と 10.0.28000.2525 以前。 この手の脆弱性、 「ローカルだから大丈夫」と後回しにしがちだけど、 侵入後の横展開に使われるのが実際の手口。 パッチ確認、先に済ませておく。

    Post summary

    The post alerts about a Windows 11 kernel use‑after‑free vulnerability (CVE‑2026‑49173, CVSS 7.8) that could allow local privilege escalation and urges users to apply the available patch.

    1000051
    18 followersView on X
CPE platform detail2 entries

2 of 2 entries

PartVendorProductVersionTarget SWTarget HW
OSmicrosoftwindows_11_26h1--arm64
OSmicrosoftwindows_11_26h1--x64

Explore more

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