Last updated: September 29, 2026 at 8:42 AM UTC
All 891 Vulnerability 357 Breach 144 Threat 383 Defense 7
Tag: pre-auth-rce (5 articles)Clear

Critical Check Point management flaw lets unauthenticated attackers gain root

Check Point patched a critical flaw in its management servers that lets an unauthenticated attacker run code as root. Tracked as CVE-2026-91843 and scored 9.8, it is a stack overflow in the login process, which handles requests before a user authenticates, and it can be triggered by a login request carrying an overly long username. It affects Quantum management, Log, and Multi-Domain servers, through the Trusted Clients path. Customers with automatic updates are already protected, and others should apply the vendor's live patch. Check Point reports no exploitation yet, but this is the third serious management-server flaw it has disclosed in weeks, and compromising it means control over the whole firewall estate.

Check
Apply Check Point's live patch for the management-server flaw now if automatic updates are not enabled, and restrict which clients can reach the management, Log, and Multi-Domain servers.
Affected
Organizations running affected Check Point Quantum management, Log, or Multi-Domain servers (CVE-2026-91843); an unauthenticated attacker can trigger a login overflow with a long username to run code as root.
Fix
Patch or confirm automatic updates applied, tightly restrict access to management-plane servers, monitor for anomalous pre-authentication login traffic, and treat the management plane as the highest-value target since it controls every firewall.

N-able ships fourth N-central hotfix in five weeks for exploited pre-auth flaw

N-able released its fourth hotfix in five weeks for its N-central remote monitoring and management platform, this time for a flaw that gives an unauthenticated attacker full "god-mode" access to the console. Tracked as CVE-2026-86218 and scored 10.0, the pre-authentication remote code execution zero-day is being exploited and supersedes all earlier hotfixes, so on-premises systems still on the third hotfix remain vulnerable and must apply the fourth. Hosted instances have already been patched. Researchers also disclosed a separate chain that lets attackers bypass access controls to create unauthorized administrator accounts. Because N-central manages many downstream endpoints, a compromise can cascade across every customer it serves.

Check
Apply N-central hotfix 4 immediately on any on-premises server, since prior hotfixes do not cover this flaw, then audit the console's user list for unauthorized administrator accounts.
Affected
Organizations and managed-service providers running on-premises N-able N-central (CVE-2026-86218); an unauthenticated attacker can execute code and gain full control of the console, and from there potentially reach every managed endpoint.
Fix
Patch to the latest hotfix, strictly limit inbound access to the N-central console, audit for rogue admin accounts and recent changes, monitor managed endpoints, and treat any exposed unpatched server as compromised.

Public exploit reaches PHP eval in vBulletin for unauthenticated code execution

Public exploit details released on July 27 show how an unauthenticated request can reach PHP's eval function inside vBulletin and run code on an unpatched forum server. The attack needs no account, administrative access, or interaction from another user, making any internet-facing vulnerable forum a direct target. SSD Secure Disclosure lists vBulletin 6.2.1 and earlier and 6.1.6 and earlier as affected, without giving a lower version boundary. Forum software is an attractive target because it is public by design, often runs with limited maintenance, and a single compromised server can host web shells, redirect visitors, or expose community member data. Administrators should confirm their version and patch level.

Check
Confirm the vBulletin version on any forum you run, apply the vendor's patches, and inspect the server for web shells and unexpected PHP files given that a public exploit exists.
Affected
Internet-facing vBulletin forums on 6.2.1 and earlier or 6.1.6 and earlier; an unauthenticated request reaches PHP eval for remote code execution, and working exploit details are now public.
Fix
Update vBulletin to a patched release, place a web application firewall in front of the forum, restrict server file writes, and monitor for unexpected processes spawned by the web server.

Public exploits released for WordPress core flaws that give anonymous code execution

Public exploit code is now available for wp2shell, a pair of WordPress core flaws that chain into pre-authentication remote code execution against a stock site with no plugins installed. CVE-2026-63030 is a route confusion bug in the REST API batch endpoint, which has shipped enabled by default since 2020, and CVE-2026-60137 is a SQL injection in the author parameter handling of WP_Query. Chained, an anonymous HTTP request can run code on the server. The chain affects WordPress 6.9.0 through 6.9.4 and 7.0.0 through 7.0.1, fixed in 6.9.5 and 7.0.2, and WordPress enabled forced automatic updates given the severity.

Check
Confirm every WordPress site you run, including forgotten and staging instances, is on 6.9.5 or 7.0.2 or later, then check logs and web directories for web shells.
Affected
Any site on WordPress 6.9.0 to 6.9.4 or 7.0.0 to 7.0.1 (CVE-2026-63030, CVE-2026-60137); no plugins, login, or user interaction are needed, and working exploits are public.
Fix
Update to WordPress 6.9.5 or 7.0.2, confirm auto-updates applied, put a web application firewall in front of exposed sites, and treat unpatched internet-facing installs as potentially compromised.

Critical Kemp LoadMaster flaw gives unauthenticated attackers root on edge appliances

A critical flaw in Progress Kemp LoadMaster lets an unauthenticated attacker run commands as root on the appliance by sending a crafted request to its API. Rated 9.8, the bug (CVE-2026-8037) sits in a function meant to sanitize input before it reaches a shell command, and LoadMaster's position as an edge load balancer and application delivery controller makes a pre-authentication flaw especially dangerous, since it can turn a protective choke point into a direct foothold. Progress patched it in early June, and researchers at watchTowr published a full technical write-up with a working proof-of-concept on June 29. No exploitation has been reported yet, but Progress also makes MOVEit, a past mass-exploitation target.

Check
Identify Progress Kemp LoadMaster appliances with the API enabled, confirm their versions, and determine whether the management API is reachable from untrusted networks or the internet, the exposure this flaw needs.
Affected
Kemp LoadMaster GA 7.2.63.1 and earlier and LTSF 7.2.54.17 and earlier with the API enabled (CVE-2026-8037); an unauthenticated attacker who can reach the API gains root on an edge device.
Fix
Update to LoadMaster GA 7.2.63.2 or LTSF 7.2.54.18, and question whether the management API needs to be reachable at all, restricting it to trusted management networks or disabling it where unused.