Loading vulnerability…
CVE-2026-58123 is an unauthenticated remote code execution vulnerability affecting Hermes WebUI before version 0.51.788. The flaw stems from missing authentication on embedded terminal API endpoints that expose a critical terminal management function. A remote attacker can interact directly with these endpoints without credentials, create a terminal session, attach a PTY shell, and submit arbitrary commands through the terminal input functionality. Exploitation requires four sequential unauthenticated HTTP requests and results in arbitrary shell command execution in the security context of the Hermes WebUI server process user.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.