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CVE-2026-42974General(microsoft / windows_11_23h2)

LOWCVSS 8.1 · HIGH

Signal is active with 2 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

Integer overflow or wraparound in Windows Performance Monitor allows an unauthorized attacker to execute code over a network.

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1.0/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-190

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_23h2
  • windows_11_24h2
  • windows_11_25h2
  • windows_11_26h1

Threat summary

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

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • General: 1 classified signal
  • 2 total mentions across 1 day

Affected systems

Vendors
microsoft
Products
windows_11_23h2windows_11_24h2windows_11_25h2windows_11_26h1windows_server_2022windows_server_2025

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-06-10: 2Patch / Workaround · 2026-06-10: 1Technical Details · 2026-06-10: 106-10
Signal classification2 categories
General
150.0%
Patch
150.0%
Referenced assets7 URLs
Full discourse2 posts
  • Thanatos Tian@HototogisuTian
    General

    CVE-2026-40409: https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-40409 CVE-2026-42968: https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-42968 CVE-2026-42974: https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-42974 CVE-2026-42981: https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-42981 CVE-2026-44811: https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-44811 CVE-2026-45638: https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-45638

    Post summary

    The post simply lists multiple CVE identifiers with accompanying links to Microsoft security advisories, offering no further context or actionable details.

    0000071
    25 followersView on X
  • WindowsForum@windowsforum
    Patch

    🪟 CVE-2026-42974 is RCE via Windows Performance Monitor—aka the “harmless monitoring” you leave on until it bites. Patch fast: remote mgmt + trust = instant chaos. #Windows #Microsoft #PatchTuesday https://windowsforum.com/threads/cve-2026-42974-windows-performance-monitor-rce-patch-june-9-fast.424855/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #SecurityHardening #PatchTuesday #WindowsRce https://t.co/9HbwctnKGW

    Post summary

    The tweet highlights CVE‑2026‑42974 as a Windows Performance Monitor RCE and urges users to apply patches, referencing a forum thread for remediation.

    0000039
    1.2K followersView on X
CPE platform detail10 entries

10 of 10 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_2025--x64

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