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CVE-2026-62800Patch(microsoft / windows_10_1607)

LOWCVSS 8.8 · HIGH

Signal is active with 2 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

Heap-based buffer overflow in Windows SMB Server allows an authorized attacker to execute code over a network.

microsoft CVEsBack to dashboard
1.0/ 10 priority

Sources & remediation

Patch / fix
Weakness type (CWE)
CWE-122

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_10_1607
  • windows_10_1809
  • windows_10_21h2
  • windows_10_22h2

Threat summary

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

What's happening

  • Patch or workaround mentioned in 2 signals
  • Technical details provided in 2 signals
  • 2 total mentions across 1 day

Affected systems

Vendors
microsoft
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 / 1d
01122Mentions · 2026-08-11: 2Patch / Workaround · 2026-08-11: 2Technical Details · 2026-08-11: 208-11
Signal classification1 categories
Patch
2100.0%
Referenced assets1 URL
By indicator
Full discourse2 posts
  • nafiez@zeifan
    Patch

    Found a heap overflow vulnerability in Windows SMB that leads to RCE and reported it to MSRC in June. The vulnerability has now been addressed with CVE-2026-62800 in the August Patch Tuesday updates. https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62800 https://t.co/YFwAeTAFbC

    Post summary

    A heap overflow vulnerability in Windows SMB that enables RCE was reported and has been addressed in the August Patch Tuesday update (CVE-2026-62800).

    981147422731.5K
    2.4K followersView on X
  • Rıdvan Yağlı@ridvanyagli
    Patch

    Windows SMBv3 Server'da bulunan CVE-2026-62800 heap overflow zafiyeti Patch Tuesday'de yamalananlar arasında. Neydi? - SMB sunucusuna özel hazırlanmış paketler göndererek heap'i bozup RCE potansiyeli olan bir açıktı. MSRC kaydı: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62800

    Post summary

    The post confirms that CVE‑2026‑62800 is a heap‑overflow flaw in SMBv3 Server, potentially enabling RCE, and that Microsoft applied a patch on Patch Tuesday.

    00011281
    1.6K 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---

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