VulnSocial

CVE-2026-33099Disclosure(microsoft / windows_10_1607)

LOWCVSS 7.0 · HIGH

Signal is active with 2 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 Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

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0.5/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-416

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

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

  • 2 mentions across 1 observed day

What's happening

  • Technical details provided in 2 signals
  • Disclosure: 2 classified 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_server_2012windows_server_2016windows_server_2019

2 versions affected across 12 products

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-04-15: 2Technical Details · 2026-04-15: 204-15
Signal classification1 categories
Disclosure
2100.0%
Referenced assets2 URLs
Full discourse2 posts
  • WindowsForum@windowsforum
    Disclosure

    🪟 CVE-2026-33099: AFD.sys EoP in the “we’ll patch first, details later” tradition. Love that for defenders—treat it real, hunt it blind, and pray it’s not already in the wild. https://windowsforum.com/threads/cve-2026-33099-afd-sys-windows-kernel-eop-patch-fast-investigate-quietly.413506/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #PrivilegeEscalation #AfdSys #WindowsKernelSecurity #Cve202633099 https://t.co/dhtvi1nD5P

    Post summary

    The tweet announces the discovery of CVE‑2026‑33099, noting an EoP flaw in AFD.sys, but provides no PoC, exploit code, patch, or evidence of active exploitation.

    0000047
    1.1K followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-33099 Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally. https://www.cve.org/CVERecord?id=CVE-2026-33099

    Post summary

    The post announces CVE‑2026‑33099, noting it is a use‑after‑free vulnerability in Windows WinSock’s Ancillary Function Driver that allows local privilege elevation, with no PoC, exploit, or patch details provided.

    00000103
    57.2K followersView on X
CPE platform detail22 entries

22 of 22 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_server_2012---
OSmicrosoftwindows_server_2012r2--
OSmicrosoftwindows_server_2016---
OSmicrosoftwindows_server_2019---
OSmicrosoftwindows_server_2022---
OSmicrosoftwindows_server_2022_23h2---

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