CVE-2021-43825

score

<0.1

cvss

6.1

epss

0.9%

published

2022-02-22

kev added

—

first seen

2026-10-21

Envoy contains a buffer overflow vulnerability caused by improper handling of buffer limits during response processing in the filter chain, letting attackers cause a denial of service by crashing the system, exploit requires sending large responses to overflow buffers.