CVE-2025-62504: stato di sfruttamento e disponibilità della patch

CVE-2025-62504 · CVSS 6.5 MEDIUM · EPSS <1%

Envoy is an open source edge and service proxy. Envoy versions earlier than 1.36.2, 1.35.6, 1.34.10, and 1.33.12 contain a use-after-free vulnerability in the Lua filter. When a Lua script executing in the response phase rewrites a response body so that its size exceeds the configured per_connection_buffer_limit_bytes (default 1MB), Envoy generates a local reply whose headers override the original response headers, leaving dangling references and causing a crash. This results in denial of service. Updating to versions 1.36.2, 1.35.6, 1.34.10, or 1.33.12 fixes the issue. Increasing per_connection_buffer_limit_bytes (and for HTTP/2 the initial_stream_window_size) or increasing per_request_buffer_limit_bytes / request_body_buffer_limit can reduce the likelihood of triggering the condition but does not correct the underlying memory safety flaw.

CVE-2025-62504 viene sfruttato?

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Cosa ha pubblicato PlainSec su CVE-2025-62504

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KEV ed EPSS vengono ricontrollati ogni giorno. Scheda aggiornata il 2026-08-15.