V4bel's banner
V4bel's profile picture

V4bel

@v4bel • 3,584 subscribers

Independent Vuln. Researcher / Pwn2Own Berlin 2025, 2026 / Google kernelCTF 0-day / Google kvmCTF 0-day / Pwnie Awards 2025

Shorts

qwerty and I exploited a VSock 1-day in Google kernelCTF back in *February*, securing $71,337 🥳 (CVE-2025-21756, exp237/exp249) And I’ve just published the write-up: A kernel developer reviewing a patch for a separate VSock bug I submitted accidentally discovered this vulnerability, and we were the first to exploit it. PoC 💻: root on Ubuntu 24.04

qwerty and I exploited a VSock 1-day in Google kernelCTF back in *February*, securing $71,337 🥳 (CVE-2025-21756, exp237/exp249) And I’ve just published the write-up: A kernel developer reviewing a patch for a separate VSock bug I submitted accidentally discovered this vulnerability, and we were the first to exploit it. PoC 💻: root on Ubuntu 24.04

15,887 views

Videos

LIVE
1.2k

Anya Rossi

sweetdream.ai

SweetDream.aiSponsored•Livecam
Streaming Now

Watch Anya Live

Anya is streaming live right now! Join her private show and enjoy exclusive content.

HD live stream
Exclusive private shows
1.2k viewers online

Free preview available • Premium content

💥 Introducing "Januscape" (CVE-2026-53359) A Guest-to-Host Escape in KVM/x86 exploiting a UAF in the shadow MMU. Triggerable on both Intel and AMD hosts. Threatens x86 public clouds (GCP, AWS) that expose nested virtualization. "16 years" latent. Successfully used as a 0-day exploit in "Google kvmCTF". To the best of public knowledge, the first KVM exploit research triggerable on both Intel and AMD. Details:
0:25
v4bel's profile picture

💥 Introducing "Januscape" (CVE-2026-53359) A Guest-to-Host Escape in KVM/x86 exploiting a UAF in the shadow MMU. Triggerable on both Intel and AMD hosts. Threatens x86 public clouds (GCP, AWS) that expose nested virtualization. "16 years" latent. Successfully used as a 0-day exploit in "Google kvmCTF". To the best of public knowledge, the first KVM exploit research triggerable on both Intel and AMD. Details:

V4bel

60,214 views • 23 days ago

No more content to load