VulnSocial

CVE-2026-77886Patch(microsoft / windows_10_1607)

LOWCVSS 7.5 · 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

Out-of-bounds read in Windows DHCP Server allows an unauthorized attacker to deny service over a network.

microsoft CVEsBack to dashboard
1.0/ 10 priority

Sources & remediation

Patch / fix
Weakness type (CWE)
CWE-125

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_server_2012
  • windows_server_2016

Threat summary

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

What's happening

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

Affected systems

Vendors
microsoft
Products
windows_10_1607windows_10_1809windows_server_2012windows_server_2016windows_server_2019windows_server_2022windows_server_2025

2 versions affected across 7 products

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-09-22: 1Patch / Workaround · 2026-09-22: 1Technical Details · 2026-09-22: 109-22
Signal classification1 categories
Patch
1100.0%
Referenced assets1 URL
Full discourse1 post
  • Windows Forum@windowsforum
    Patch

    🚨 Windows DHCP Server has a 7.5-rated DoS flaw, and Microsoft says customers must act. Patch the matching KB and verify the build—because “the network’s down” is a lousy security alert. https://windowsforum.com/news/cve-2026-77886-windows-dhcp-server-denial-of-service-vulnerability.445504/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #MicrosoftSecurity #Msrc #Cve202677886 https://t.co/nIs4RcDOfw

    Post summary

    This post discloses CVE-2026-77886, a 7.5-rated DoS flaw in Windows DHCP Server, and explicitly directs users to patch the matching Microsoft KB and verify the build.

    0100074
    1.4K followersView on X
CPE platform detail10 entries

10 of 10 entries

PartVendorProductVersionTarget SWTarget HW
OSmicrosoftwindows_10_1607--x64
OSmicrosoftwindows_10_1607--x86
OSmicrosoftwindows_10_1809--x64
OSmicrosoftwindows_10_1809--x86
OSmicrosoftwindows_server_2012---
OSmicrosoftwindows_server_2012r2--
OSmicrosoftwindows_server_2016---
OSmicrosoftwindows_server_2019---
OSmicrosoftwindows_server_2022---
OSmicrosoftwindows_server_2025---

Explore more

Back to dashboardmicrosoft CVEswindows_10_1607 vulnerabilities