Check Point has rushed out a fix for a critical flaw in its Remote Access VPN, Mobile Access, and Spark firewall products that attackers have been exploiting since May 7. The bug (CVE-2026-50751, rated 9.3) is a logic error in how the software checks certificates, letting an unauthenticated attacker log into the VPN with no password, but only on gateways still using the old IKEv1 key-exchange protocol. So far a few dozen organizations have been hit, and at least one intrusion was tied to an affiliate of the Qilin ransomware gang, which used the access to steal data with Rclone before deploying ransomware. A second, unexploited flaw was also patched.
Researchers at Bishop Fox have shown that three maximum-severity flaws Ubiquiti patched in May can be chained into a single attack that hands an unauthenticated attacker root access to UniFi OS Server with one crafted web request. Two flaws (CVE-2026-34908 and CVE-2026-34909) bypass the login gateway by abusing how the server reads encoded web addresses; the third (CVE-2026-34910) injects commands into the package-update feature, which runs with passwordless sudo, making escalation to root trivial. The flaws hit version 5.0.6 and earlier across widely used gear like UDM, UCG, and UNVR appliances. Bishop Fox released a free script to check for exposure.
Gogs, a popular self-hosted Git service, has finally patched a critical zero-day that Rapid7 disclosed in late May when no fix existed. The flaw (CVSS 9.4, no CVE assigned yet) lets a logged-in user with no admin rights run commands on the server by opening a pull request whose branch name secretly injects an exec option into a git rebase. Because Gogs ships with open registration on by default, an attacker can simply create an account to reach it. Successful exploitation means full server takeover: reading every private repository, dumping password hashes, API tokens, SSH keys, and 2FA secrets, and tampering with hosted source code.
A working exploit is now public for a Linux kernel bug that lets an ordinary local user become root and break out of containers. The flaw (CVE-2026-23111) lives in nf_tables, the kernel's packet-filtering code, and came down to a single inverted character that the upstream fix removed in one line back in February. It is reachable on common setups that have nf_tables plus unprivileged user namespaces enabled, both default on most desktops and many servers. Ubuntu rates it 7.8. There is no remote path on its own, but Exodus Intelligence published a full exploit walkthrough on June 8, making weaponization easy.
A security startup's autonomous AI agent scanned FFmpeg, the open-source media library built into countless video and audio tools, and turned up 21 previously unknown bugs, each with working proof-of-concept code that crashes or corrupts memory when the software processes a malicious media file. Several flaws are 15 to 20 years old; one dates back to 2003. Nine already carry CVE numbers (CVE-2026-39210 through CVE-2026-39218), and the rest are fixed but not yet numbered. The whole run cost about $1,000. Because FFmpeg sits inside browsers, media servers, and apps everywhere, any product that decodes untrusted video could be at risk.
Google shipped Chrome 149 with fixes for 429 security bugs, the most ever in a single Chrome release. More than 100 are rated critical or high. The worst, an out-of-bounds read and write in the ANGLE graphics engine that Chrome uses to render web pages, lets a booby-trapped website break out of the browser's protective sandbox and run code on the victim's computer; Google paid a $97,000 bounty for it. None are confirmed under attack yet, but a sandbox escape is the kind of bug attackers race to weaponize, so patching before that happens matters.
A critical flaw in Zcash's Orchard privacy pool, the system that lets people send the ZEC cryptocurrency while hiding amounts and parties, could have let an attacker mint unlimited counterfeit coins without detection. Security researcher Taylor Hornby, hired by developer Shielded Labs to probe the code, found it on May 29 using Anthropic's Claude Opus 4.8 model paired with a custom auditing tool, and wrote a working exploit within a day. The bug had survived four years and multiple expert reviews. An emergency fix shipped by June 1. Because the pool hides balances, there is no way to prove whether anyone exploited it earlier.
Cisco has warned of an actively exploited, unpatched zero-day in Cisco Catalyst SD-WAN Manager (CVE-2026-20245) that enables root privilege escalation across all deployment types, including on-prem, Cloud, Managed, and FedRAMP Government. The flaw stems from insufficient validation of user-supplied input: an attacker who uploads a crafted file can perform command injection and run arbitrary commands as root. Exploitation requires netadmin privileges - obtained via valid credentials or by chaining CVE-2026-20182 or CVE-2026-20127. Mandiant reported the activity to Cisco's PSIRT in June. Cisco has observed limited cases where exploitation pushed configuration changes to edge devices, and published IoCs pointing to suspicious tenant-list uploads in scripts.log.
CISA has warned that attackers are actively exploiting CVE-2026-28318, a high-severity SolarWinds Serv-U denial-of-service flaw, and added it to the Known Exploited Vulnerabilities catalog. Serv-U is SolarWinds' Windows and Linux managed-file-transfer and FTP software. The flaw is an uncontrolled-resource-consumption weakness: specially crafted POST requests using Content-Encoding: deflate crash the Serv-U service without authentication, in low-complexity attacks needing no user interaction. SolarWinds shipped Serv-U 15.5.4 Hotfix 1 and advised admins who cannot patch to restrict access and block POST requests containing content-encoding. Shodan tracks over 12,000 exposed Serv-U servers (Shadowserver around 3,100). FCEB agencies must patch by June 19 under BOD 22-01.
Wordfence reports active exploitation of CVE-2026-3300 (CVSS 9.8), a remote code execution flaw in the Everest Forms Pro WordPress plugin (about 4,000 active installations) affecting all versions up to 1.9.12. The Calculation Addon's process_filter() function concatenates user-submitted form-field values into a PHP string and passes it to eval() without proper escaping; sanitize_text_field() does not escape single quotes, so unauthenticated attackers can inject and run arbitrary PHP by submitting a crafted value in any string-type field when a form uses the Complex Calculation feature. Exploitation began April 13; Wordfence has blocked 29,300+ attempts. The common payload creates a rogue admin named 'diksimarina.' Patch 1.9.13 shipped March 18.
TrustStrike Labs