CVE-2026-42905General(microsoft / windows_10_1607)

LOWCVSS 7.8 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Use after free in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

0.5/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-416

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

STABLE

Are you affected?

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

  • windows_10_1607
  • windows_10_1809
  • windows_10_21h2
  • windows_10_22h2

Threat summary

  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Technical details provided in 2 signals
  • General: 1 classified signal
  • Disclosure: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-06-10); latest day: 1
  • 2 total mentions across 2 days

Affected systems

Vendors
Products
windows_10_1607windows_10_1809windows_10_21h2windows_10_22h2windows_11_23h2windows_11_24h2windows_11_25h2windows_11_26h1windows_server_2012windows_server_2016

2 versions affected across 13 products

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-06-10: 1Mentions · 2026-09-23: 1Technical Details · 2026-06-10: 1Technical Details · 2026-09-23: 106-1009-23
Signal classification2 categories
General
150.0%
Disclosure
150.0%
Referenced assets2 URLs
By indicator
Classification over time
DateTotalLabels
2026-06-101
General1
2026-09-231
Disclosure1
Full discourse2 posts
  • kawn@kawn2020
    General

    #windowsupdate #microsoft ●悪用可能性 -悪用の事実を確認済み:0 件 -悪用される可能性が高い:14 件 ・CVE-2026-42905 7.8 Windows DWM Core ライブラリ ・CVE-2026-42980 7.8 Windows NT OS カーネル つづく… https://x.com/kawn2020/status/2064629746538008881

    Post summary

    The tweet lists CVEs with high exploitation potential but provides no PoC, exploit tool, active exploitation evidence, or patch details, merely offering a high-level vulnerability overview.

    1000072
    85 followersView on X
  • Xss Forum@xss_forum
    Disclosure

    🚨 New Article: RCA of CVE-2026-42905 — UAF in Windows DWM Reversing DWM architecture traces the root cause of CVE-2026-42905 to a use-after-free that lets you call a function from an address sitting in a freed chunk inside privileged usermode dwm.exe, a path that can still be turned into SYSTEM with tricks like the Project Zero write-up on CVE-2023-36033. 🔗 Link: https://xss.mx/threads/149192/ #CVE202642905 #DWM #Windows #UAF #LPE #ReverseEngineering #RedTeam #InfoSec #CyberSecurity

    Post summary

    The tweet announces a reverse‑engineering article that details a use‑after‑free vulnerability in Windows DWM (CVE‑2026‑42905) capable of local privilege escalation, providing technical specifics but no PoC, exploit code, patch, or evidence of active exploitation.

    00000111
    13 followersView on X
CPE platform detail24 entries

24 of 24 entries

PartVendorProductVersionTarget SWTarget HW
OSmicrosoftwindows_10_1607--x64
OSmicrosoftwindows_10_1607--x86
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_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_2012---
OSmicrosoftwindows_server_2012r2--
OSmicrosoftwindows_server_2016---
OSmicrosoftwindows_server_2019---
OSmicrosoftwindows_server_2022---
OSmicrosoftwindows_server_2025--x64

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