VulnSocial

CVE-2026-26165Disclosure(microsoft / windows_11_23h2)

LOWCVSS 7.0 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch microsoft windows_11_23h2 systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

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

microsoft CVEsBack to dashboard
1.0/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-416

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_11_23h2
  • windows_11_24h2
  • windows_11_25h2
  • windows_11_26h1

Threat summary

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

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 3 signals
  • Disclosure: 2 classified signals
  • Peaked 1d ago at 2 mentions (2026-04-17); latest day: 1
  • 3 total mentions across 2 days

Affected systems

Vendors
microsoft
Products
windows_11_23h2windows_11_24h2windows_11_25h2windows_11_26h1windows_server_2022windows_server_2022_23h2windows_server_2025

Deep dive

Activity timeline3 mentions / 2d
01122Mentions · 2026-04-17: 2Mentions · 2026-04-25: 1Patch / Workaround · 2026-04-25: 1Technical Details · 2026-04-17: 2Technical Details · 2026-04-25: 104-1704-25
Signal classification2 categories
Disclosure
266.7%
Patch
133.3%
Referenced assets2 URLs
By indicator
Classification over time
DateTotalLabels
2026-04-172
Disclosure2
2026-04-251
Patch1
Full discourse3 posts
  • Giuseppe Paternicola@giuseppe_1337
    Patch

    🚨 HIGH: CVE-2026-26165 (CVSS 7.0) - Use-after-free in Windows Shell enables local privilege escalation. Authenticated attackers can exploit this to gain elevated privileges. Patch immediately. #CVE #PatchNow #CyberSecurity https://t.co/1GDUz7JAHv

    Post summary

    The tweet announces CVE‑2026‑26165, details a use‑after‑free UAC vulnerability in Windows Shell, and urges immediate patching without mentioning PoC or active exploitation.

    0000057
    25 followersView on X
  • Infoflowcloud@infoflowcloud
    Disclosure

    🚨*CVE* CVE-2026-26165 Use after free in Windows Shell allows an authorized attacker to elevate privileges locally. https://www.cve.org/CVERecord?id=CVE-2026-26165 ----- Traducción: CVE-2026-26165 Uso tras liberación de memoria en Shell de Windows permite que un atacante auto… http://infoflow.cloud`

    Post summary

    The tweet announces CVE‑2026‑26165, a use‑after‑free flaw in Windows Shell that permits local privilege escalation, with no further details on exploits or mitigation.

    0000034
    71 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-26165 Use after free in Windows Shell allows an authorized attacker to elevate privileges locally. https://www.cve.org/CVERecord?id=CVE-2026-26165

    Post summary

    The text provides a brief technical description of CVE-2026-26165, noting a use‑after‑free in Windows Shell that permits local privilege escalation, with no evidence of PoC, exploit code, or patch information.

    00000164
    57.2K followersView on X
CPE platform detail11 entries

11 of 11 entries

PartVendorProductVersionTarget SWTarget HW
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_2022---
OSmicrosoftwindows_server_2022_23h2---
OSmicrosoftwindows_server_2025---

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