ITScape

ITScape: Guest-to-Host Escape in KVM/arm64 Abstract This document describes the ITScape CVE-2026-46316 vulnerability reported and patched by Hyunwoo Kim @v4bel. It is a KVM escape vulnerability that lets a guest escape to the host in a KVM/arm64 environment and run commands on the host with kerne...

Zapscape

The KVM Escape Trilogy ITScape CVE‑2026‑46316 | Januscape CVE‑2026‑53359 | Zapscape CVE‑2026‑64561 ---|---|--- Zapscape: Guest-to-Host Escape in KVM/x86 Abstract This document describes the Zapscape CVE-2026-64561 vulnerability discovered and reported by Hyunwoo Kim @v4bel. It is a KVM escape...

Januscape

Januscape: Guest-to-Host Escape in KVM/x86 Abstract This document describes the Januscape CVE-2026-53359 vulnerability discovered and reported by Hyunwoo Kim @v4bel. It is a KVM escape vulnerability that lets a guest escape to the host in a KVM/x86 environment. To the best of public knowledge, th...

RWCTF21-VirtualBox-61-escape

RWCTF21-VirtualBox-61-escape 0day VirtualBox 6.1 Escape for RealWorld CTF 2020/2021 Demo What? This is our solution for RealWorld CTF's "Box Escape" challenge from the 2020/2021 quals. Currently a 0day but we'll add the CVE number once there is one. CVE-2021-2119 How does it work? We wrote a...

vbox_cve_2017_10235

CVE-2017-10235: VirtualBox E1000 デバイスのバッファオーバーフロー はじめに 以下の文書では、VirtualBox v5.1.22（v5.1.24 で修正済み）で発見されたバグについて詳しく説明します。このバグは、ゲストデバイスエミュレーションコンポーネント DevE1000（ Intel 82540EM イーサネットコントローラエミュレーション ）内の関数 e1kFallbackAddToFrame に存在し、攻撃者によって制御されたゲスト OS がホスト上でバッファオーバーフローを引き起こす可能性があります。 このバグは、Oracle によって...

Januscape-Hotfix

Januscape Fix Library — CVE-2026-53359 简体中文 Complete fix collection for the CVE-2026-53359 guest-to-host escape vulnerability in the KVM/x86 shadow MMU. From zero-downtime livepatch to kernel upgrade — covers every operational scenario. One-liner root@kitploit: Direct curl -sL...

CVE-2021-28476

CVE-2021-28476: a guest-to-host "Microsoft Hyper-V Remote Code Execution Vulnerability" in vmswitch.sys. This is a proof of concept for CVE-2021-28476 "Hyper-V Remote Code Execution Vulnerability", an arbitrary memory read in vmswitch.sys network virtualization service provider patched by Microso...

0vercl0k

0vercl0k CVE-2021-28476 の PoC — vmswitch.sys におけるゲストからホストへの「Hyper-V リモートコード実行の脆弱性」...

CVE-2021-28476

CVE-2021-28476: Hyper-V vmswitch.sys におけるゲストVMからの任意ポインタ参照 概要: Hyper-V ゲスト仮想マシンは、vmswitch.sys 内の VmsIfrInfoParamsOIDSWITCHNICREQUEST...

januscape

Januscape — Linux KVM/x86 guest-to-host escape tracking site Source for the Januscape patch-status tracker: a single-page site recording which distributions have shipped a fix for the KVM/x86 guest-to-host escape in the Linux kernel. Where the facts live Everything about the bug — CVE IDs, affect...

CVE-2026-53360-POC

CVE-2026-53360: KVM SEV-SNP PSC heap out-of-bounds Proof of concept for a heap out-of-bounds read and write in KVM's SEV-SNP Page State Change PSC handling. A malicious SEV-SNP guest makes the host kernel walk a PSC entry array off the end of its slab allocation. That leaks the layout of...

CVE-2026-53359

🚨 CVE-2026-53359 — Januscape Linux KVM シャドウページング Use-After-Free（ゲストからホストへの脱出） Januscape は、x86 Shadow MMU における Use-After-Free UAF 状態によって引き起こされる Linux カーネル KVM の脆弱性です。脆弱な設定では、悪意のあるゲストがホストメモリを破損させ、ホストのクラッシュや VM 分離の破綻につながる可能性があります。 📌 概要 📖 説明 この脆弱性は、KVM のレガシーシャドウページング実装 に存在します。 以前のセキュリティ修正では Guest Fra...

itscape

ITScape — Linux KVM/arm64 guest-to-host escape tracking site Source for the ITScape patch-status tracker: a single-page site recording which distributions have shipped a fix for the KVM/arm64 guest-to-host escape in the Linux kernel. Where the facts live Everything about the bug — CVE IDs, affect...

Linux Distros Unpatched Vulnerability : CVE-2026-79994

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - The guest-to-host Unix-domain socket relay in Docker Sandboxes validates that a socket path is inside an authorized workspace, but later reconnects using the...

CVE-2026-79994

CVE-2026-79994 affects the guest-to-host Unix-domain socket (UDS) forwarder in Docker Sandboxes . The relay validates that a socket path resides inside an authorized workspace but later reconnects using the raw pathname. A malicious guest can exploit a symlink race by replacing an intermediate di...

CVE-2026-79994 Docker Sandboxes UDS forwarder can reach arbitrary host Unix sockets through a symlink race

The guest-to-host Unix-domain socket relay in Docker Sandboxes validates that a socket path is inside an authorized workspace, but later reconnects using the pathname. A malicious guest can replace an intermediate directory with a symlink between validation and connection, causing the host to...

PT-2026-93122

The guest-to-host Unix-domain socket relay in Docker Sandboxes validates that a socket path is inside an authorized workspace, but later reconnects using the pathname. A malicious guest can replace an intermediate directory with a symlink between validation and connection, causing the host to...

Linux Distros Unpatched Vulnerability : CVE-2026-89727

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - KVM: arm64: GICv2: Don't WARN on out-of-range GICVDIR INTID vgicv2deactivate passes the INTID a guest wrote to GICVDIR straight to vgicgetvcpuirq, and treats a...

CVE-2026-89513

A flaw was found in the Linux kernel's KVM Kernel-based Virtual Machine component for RISC-V architectures. A malicious guest operating system could exploit an integer overflow vulnerability by providing a crafted number of Performance Monitoring Unit PMU events during the SBI PMU EVENTGETINFO...

CVE-2026-84869 ScreenConnect Client: Guest-to-Host File Execution via File-Transfer Actions

A condition in the ScreenConnect client may allow files to be transferred and executed through an active remote session without authorization or Host confirmation in certain circumstances. ScreenConnect servers are not impacted...