This episode covers leftover Patch Tuesday issues: a critical remote code execution flaw in Apache HTTP Server's mod_http2 module (CVE-2026-119618), Fortinet's 89 advisories with 17 critical vulnerabilities especially in FortiMail, Ivanti's November 2026 update including an Endpoint Manager SQL injection and a Cloud Services Application certificate issue, an unpatched Windows Common Log File System privilege escalation called SignDrop, and N-able's N-central 2026.4 Hotfix 2.
Apache HTTP Server mod_http2 Remote Code Execution (CVE-2026-119618)
Apache released HTTP Server 2.4.71, fixing a critical heap overflow in the mod_http2 assign_headers function that can lead to remote code execution. No public working exploit is available yet; disabling HTTP/2 can mitigate the issue, but proxies that translate to HTTP/2 still need to watch for HTTP request smuggling. https://httpd.apache.org/security/vulnerabilities_24.html
Fortinet November Advisories
Fortinet published 89 advisories addressing more than 100 vulnerabilities across its product portfolio, including 17 rated critical. FortiMail received the most critical fixes, and several of the critical issues may allow unauthenticated arbitrary code execution. Fortinet used AI as part of the vulnerability discovery work behind this release. https://www.fortiguard.com/psirt
Ivanti November 2026 Security Update
Ivanti's November 2026 security update includes a SQL injection in Endpoint Manager (EPM) that may be leveraged for remote code execution, tracked as CVE-2026-121653, and a vulnerability in Ivanti Cloud Services Application (CSA) that allowed unauthenticated alteration of trusted EPM Core certificates (CVE-2026-121683). https://www.ivanti.com/blog/november-2026-security-update
Windows SignDrop CLFS Privilege Escalation
Researcher Nightmare Eclipse (MSNightmare) released SignDrop, a local privilege escalation in the Windows Common Log File System (CLFS) that abuses the HMAC-based log-file authentication Microsoft added about a year ago, along with symlink and timing tricks. A regular user can escalate to SYSTEM on Windows 11 26H2 and Windows Server 2025. A proof-of-concept is on GitHub; Microsoft has not confirmed the issue, there is no CVE, and disabling CLFS log authentication is not a recommended workaround because it would restore older CLFS attacks. https://github.com/MSNightmare/SignDrop
N-able N-central 2026.4 Hotfix 2
N-able has released N-central 2026.4 Hotfix 2, and the release notes identify three CVE numbers addressed in the update, after N-able earlier shut down its hosted infrastructure in response to the reported vulnerabilities. The initial public reports described around 30 vulnerabilities, and attackers are already probing leaked paths. Shadowserver's count of exposed N-central servers dropped from about 1,338 to around 148. On-premises operators should apply the hotfix before bringing a server back online and still avoid exposing it if possible. https://status.n-able.com/2026/11/10/n-central-2026-4-hf2-release-notes/
My Upcoming Classes https://www.sans.org/profiles/dr-johannes-ullrich
Podden och tillhörande omslagsbild på den här sidan tillhör
Johannes B. Ullrich. Innehållet i podden är skapat av Johannes B. Ullrich och inte av,
eller tillsammans med, Poddtoppen.
