CVE-2026-101983

Summary

A stack-based buffer overflow in Juniper's httpd process allows unauthenticated remote code execution and denial of service when J-Web virtual domains are configured. This critical vulnerability can be exploited by any network attacker without authentication.

Exploitability

Exploitation is likely straightforward with no special preconditions, as the vulnerability affects an unauthenticated network service with a predictable buffer overflow pattern.

Blast radius

The impact could be severe across all Juniper devices running Junos OS or Junos OS Evolved with J-Web virtual domains configured, potentially allowing full system compromise and service disruption.

Detection

No reliable host or network indicator is derivable from the published description.

Prioritized remediation

Disable J-Web virtual domain configuration immediately or upgrade to the latest available version that fixes this vulnerability.

Analysis generated locally by garnet-coder (no data left the box). AI-assisted — verify against primary sources before acting.