ZeroHour

CVE-2026-86124

niche

Unauthenticated remote code execution in AutoAgent TCP server

CVSS 4.0
9.3 critical
EPSS
<1%p44
Published
()
Modified
AI analysis

AutoAgent ships a TCP communication server that performs actions without any authentication (CWE-306), binding to all interfaces and executing attacker-supplied input as commands. Any attacker who can reach the exposed port over the network can connect directly and submit arbitrary bash commands, which the server runs as root inside the deployment container. Because the container runs as root, the attacker gains full control of the AutoAgent environment and can read and modify host workspace directories that are bind-mounted into the container. Anyone running AutoAgent with its communication port reachable from untrusted networks — particularly internet-exposed deployments — is affected. Exploitation has not yet been reported: the flaw carries a critical CVSS 4.0 score of 9.3, but EPSS is only 0.5%, it is not in CISA KEV, and no public proof-of-concept is known.

What to do: Restrict exposure of the AutoAgent TCP communication port — bind it to localhost or firewall it to trusted hosts only, since no authentication is required to run commands as root. Check the project's repository for a patched release and upgrade as soon as a fixed version is published. Audit bind-mounted host workspace directories for unexpected changes, since successful exploitation grants root-level read/write access to them from inside the container.

Affected
AutoAgent (open-source project) AutoAgent
Estimated exposure
nichelikely hundreds to a few thousand internet-exposed deployments (self-hosted containers of a niche open-source framework) — AutoAgent is a niche self-hosted open-source LLM agent framework typically deployed in Docker containers on private networks, and only instances whose TCP communication port is published to the internet are remotely exploitable; no public…

Order-of-magnitude estimate by the model from install counts, market share and public scan data it knows; verify before quoting.

Description

AutoAgent contains an unauthenticated remote code execution vulnerability in the TCP server that binds to all interfaces and executes attacker-supplied commands as root. Attackers can connect to the exposed communication port and execute arbitrary bash commands within the container, gaining access to bind-mounted host workspace directories.

Weakness
CWE-306
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

In the news

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