Linux
CopyEscape (CVE-2026-17106): A Malicious Container Can Overwrite Files on the Docker Host via `docker cp`
CVE-2026-17106 ('CopyEscape'), found by Imperva's Red Team, lets a malicious or compromised container hijack docker cp to overwrite arbitrary files on the host — and, when the copy runs with elevated privileges, replace runc to get root. Docker has shipped fixes across Engine, Desktop, and Sandboxes.
SCTPhantom (CVE-2026-64564): An 18-Year-Old Linux Kernel SCTP Bug Gives Local Root and Escapes Containers
A use-after-free in the Linux kernel's SCTP ASCONF transport handling, present since 2008, lets a local attacker with SCTP reachability escalate to root and, on affected configurations, escape containers.
OVSwrap (CVE-2026-64531): 13-Year-Old Linux Kernel Bug in Open vSwitch Gives Any Local User Root
A 16-bit integer wraparound in the Linux kernel's Open vSwitch action parser (CVE-2026-64531, 'OVSwrap') lets any unprivileged local user become root — no OVS configuration, no CAP_NET_ADMIN, no container privileges required. A public PoC ships precomputed offsets for ~800 kernel builds.
Cisco Ships Two CVSS 9.8+ 'Hardening Releases' for IOS XE and Catalyst SD-WAN in One Day
Cisco's August 5 disclosure batch bundles seven CWE-grouped IOS XE flaws (CVSS 9.8) and five Catalyst SD-WAN flaws (CVSS 9.9) into umbrella CVEs — the first big test of its new AI-driven, twice-monthly hardening-release disclosure model.
Rails CVE-2026-66066: Unauthenticated File Read via Active Storage Image Uploads
A critical 9.5 CVSS flaw in Rails Active Storage lets unauthenticated attackers read arbitrary files — secrets, credentials, master keys — from any app that processes untrusted image uploads with libvips. Patch to 7.2.3.2, 8.0.5.1, or 8.1.3.1.
7-Zip CVE-2026-14266: Heap Overflow in XZ Decoder Lets Crafted Archives Run Code on Extraction
A heap-based buffer overflow in 7-Zip's XZ chunk decoder (CVE-2026-14266) lets a crafted .xz or .7z archive corrupt memory during extraction. Patched in 26.02; no in-the-wild exploitation reported yet, but the affected code path sits in build agents and CI unpacking steps everywhere.
AI Agents Find Two New Redis RCE Chains in Under 90 Minutes
Kimi K3 agents surfaced a stream shared-NACK double-free and a RedisBloom TDigest heap overflow across Redis 6.2 through 8.8, both yielding authenticated remote code execution. Patches are out; no in-the-wild exploitation reported yet.
RefluXFS (CVE-2026-64600): A Nine-Year-Old XFS Race Condition Roots 16.4 Million Linux Systems
A race condition in the XFS copy-on-write path lets any local user overwrite protected files and gain root — no SELinux bypass needed, no workaround available. Patch and reboot is the only fix.
HollowByte: An 11-Byte TLS Handshake Payload That Bloats OpenSSL Server Memory
A memory-allocation flaw in OpenSSL's TLS handshake parsing, dubbed HollowByte, lets an unauthenticated attacker exhaust server memory with an 11-byte payload per connection. No CVE was assigned; patched in 4.0.1 and backported across the 3.x line.
Six U-Boot Flaws Let Malicious Firmware Images Execute Code Before Signature Verification Ever Runs
Binarly found six bugs in U-Boot's FIT image parser — two lead to code execution, four to denial of service — and all six trigger while the bootloader is still reading an untrusted image, before it checks the signature that's supposed to protect it.
GhostLock (CVE-2026-43499): A 15-Year-Old Futex Bug Gives Any Local User Root — and Breaks Out of Containers
A use-after-free in the Linux kernel's futex requeue-PI code, present since 2011, lets any unprivileged local user gain root with a public, 97%-reliable exploit that also escapes Docker and Kubernetes containers.
Januscape (CVE-2026-53359): A 16-Year-Old KVM Bug Lets Guests Escape to the Host
A use-after-free in KVM's shadow MMU, present since 2010, lets a guest VM with nested virtualization corrupt host kernel memory and potentially execute code on the hypervisor — patched July 4 across Intel and AMD x86.
PixelSmash: A 50KB Video File Turns FFmpeg's MagicYUV Decoder into RCE Against Jellyfin, Nextcloud, and OBS
A heap out-of-bounds write in FFmpeg's MagicYUV decoder (CVE-2026-8461, CVSS 8.8) lets a single crafted media file achieve remote code execution against Jellyfin, Nextcloud, and other self-hosted server infrastructure that auto-processes uploaded video.
The Login Path Is the Target: Inside the PAM/OpenSSH Backdoor Playbook Attackers Keep Reusing
Sygnia's Operation Highland found a China-nexus group living inside an air-gapped network for a decade by backdooring pam_unix.so and sshd. It's the same target the XZ Utils and Ebury campaigns went after — because the Linux authentication stack is the softest hard target in your fleet.
Bad Epoll (CVE-2026-46242): A Six-Instruction Race in epoll() Roots Linux 6.4+ and Android
A use-after-free race in the Linux epoll subsystem, introduced by a 2023 commit, lets an unprivileged local user gain root with a 99%-reliable exploit — and the same code path may be reachable from Chrome's renderer sandbox on Android.
Public PoC Drops for Critical libssh2 Heap Overflow — curl, Git, and PHP All Carry the Flaw
A public PoC was released June 29 for CVE-2026-55200, a CVSS 9.2 heap overflow in libssh2 ≤ 1.11.1 that lets a malicious SSH server execute code on any connecting client. curl, Git, PHP, and a long tail of appliances all link the library.
Squidbleed: 29-Year-Old Heap Over-Read in Squid Proxy Leaks Cleartext HTTP Traffic (CVE-2026-47729)
A Heartbleed-style heap buffer over-read in Squid's FTP gateway, tracing to a 1997 commit, lets trusted proxy users drain other users' cleartext HTTP requests including credentials, cookies, and session tokens.
DirtyClone: Linux Kernel LPE via Cloned sk_buff Gives Any Local User Root (CVE-2026-43503)
JFrog releases a working exploit for DirtyClone, a Linux kernel socket-buffer cloning flaw that silently rewrites in-memory setuid binaries and grants root—with container escape potential on cloud and Kubernetes hosts.
Linux Kernel CVE-2026-46331: Pedit COW Traffic-Control Bug Delivers Root Shell, Ubuntu Still Unpatched
A weaponized PoC for CVE-2026-46331 (Pedit COW) corrupts the kernel page cache via act_pedit to drop a root shell; Ubuntu 18.04–26.04 remain unpatched.
One Symlink From Host Root: The runC maskedPaths Escapes and the Myth of the Container Boundary
Three runC CVEs disclosed in November 2025 turned container escape back into a /dev/null symlink race — and one of them walks straight through AppArmor and SELinux. Here is how the maskedPaths breakout works, why seccomp and user namespaces are the layers that actually held, and what to change before the next runtime CVE.