CVE-2013-3843: Stack-based buffer overflow in the mk_request_header_process function in mk_request.c in Monkey HTTP Daemon...

Security readout for executives and security teams

CVE-2013-3843 is a memory-safety flaw in Monkey HTTP Daemon before 1.2.1. A remote attacker could send a crafted HTTP header that crashes the web server and may enable arbitrary code execution. The strongest business concern is internet-facing legacy monkeyd deployments that still process untrusted HTTP traffic. Exposure is likely limited to systems still running Monkey HTTP Daemon before 1.2.1, especially public web servers, embedded appliances, lab systems, or old internal services where monkeyd was bundled and forgotten. Prioritize remediation for any internet-facing or business-critical monkeyd deployment. The issue is old and not KEV-listed in the bundle, but remote crash and possible code execution risk justify prompt cleanup of exposed legacy systems. Mitigation focus: Upgrade Monkey HTTP Daemon to 1.2.1 or later where it is still deployed.; If unsupported, replace monkeyd with a maintained web server.; Remove unnecessary public exposure to legacy monkeyd instances..

Prepared

Jun 14, 2026, 07:40 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.