VulnSocial

CVE-2026-34336Patch(microsoft / windows_10_1607)

LOWCVSS 7.8 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch microsoft windows_10_1607 systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

Integer overflow or wraparound in Windows DWM Core Library 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-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_1607
  • windows_10_1809
  • windows_10_21h2
  • windows_10_22h2

Threat summary

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

What's happening

  • Patch or workaround mentioned in 2 signals
  • Technical details provided in 2 signals
  • Disclosure: 1 classified signal
  • Peaked 2d ago at 1 mentions (2026-05-15); latest day: 1
  • 3 total mentions across 3 days

Affected systems

Vendors
microsoft
Products
windows_10_1607windows_10_1809windows_10_21h2windows_10_22h2windows_11_23h2windows_11_24h2windows_11_25h2windows_11_26h1windows_server_2016windows_server_2019

Deep dive

Activity timeline3 mentions / 3d
00111Mentions · 2026-05-15: 1Mentions · 2026-05-25: 1Mentions · 2026-07-02: 1Patch / Workaround · 2026-05-25: 1Patch / Workaround · 2026-07-02: 1Technical Details · 2026-05-15: 1Technical Details · 2026-05-25: 105-1505-2507-02
Signal classification2 categories
Patch
266.7%
Disclosure
133.3%
Referenced assets2 URLs
Classification over time
DateTotalLabels
2026-05-151
Disclosure1
2026-05-251
Patch1
2026-07-021
Patch1
Full discourse3 posts
  • immortalp0ny@immortalp0ny
    Patch

    Finally advisories for vulns that I found in dwmcore.dll were fixed (CVE-2026-34336, CVE-2026-35419). However, for CVE-2026-34336 list of CWE is not accurate cause heap-based overflow is possible due to integer overflow and integer overflow is possible due SubChannelMaskInfo abuse.

    Post summary

    The text informs that advisories for CVE‑2026‑34336 and CVE‑2026‑35419 have been fixed, noting specific technical details of the vulnerabilities.

    120811.5K
    926 followersView on X
  • Positive Technologies Global@PTsecurity_EN
    Patch

    Two Windows DWM 0-days patched 🚨 CVE-2026-35419 & CVE-2026-34336. Sergey Tarasov (PT ESC) caught them in dwmcore.dll. Initial access + these bugs = full device control. Patches are out. Update ASAP. Details ↓ https://dbugs.ptsecurity.com/vulnerability/PT-2026-40155?utm_source=x&utm_medium=msft&utm_campaign=17_06 #0day #Windows https://t.co/lwVl1Iqigi

    Post summary

    The post announces that two Windows DWM zero-days (CVE‑2026‑35419 and CVE‑2026‑34336) have been patched and urges users to update immediately.

    00011414
    3.6K followersView on X
  • Israel@f1tym1
    Disclosure

    CVE-2026-34336 | Microsoft Windows up to Server 2025 DWM Core Library buffer over-read (WID-SEC-2026-1489) https://ift.tt/HLuaNoT A vulnerability labeled as critical has been found in Microsoft Windows. Affected is an unknown function of the component DWM Core Library. Executi…

    Post summary

    A critical buffer over‑read vulnerability (CVE‑2026‑34336) was disclosed in the DWM Core Library of Microsoft Windows, but no PoC, exploit details, or mitigation information were provided.

    0000063
    974 followersView on X
CPE platform detail23 entries

23 of 23 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_2016---
OSmicrosoftwindows_server_2019---
OSmicrosoftwindows_server_2022---
OSmicrosoftwindows_server_2022_23h2---
OSmicrosoftwindows_server_2025---

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