VDB
BIT-ENVOY-2025-62409
BIT-ENVOY-2025-62409
PUBLISHED
CVSS 6.599999904632568 MEDIUM
Envoy is a cloud-native, open source edge and service proxy. Prior to 1.36.1, 1.35.5, 1.34.9, and 1.33.10, large requests and responses can potentially trigger TCP connection pool crashes due to flow control management in Envoy. It will happen when the connection is closing but upstream data is still coming, resulting in a buffer watermark callback nullptr reference. The vulnerability impacts TCP proxy and HTTP 1 & 2 mixed use cases based on ALPN. This vulnerability is fixed in 1.36.1, 1.35.5, 1.34.9, and 1.33.10.
Risk Scores
CVSS 4.0
6.599999904632568
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| envoyproxy | envoy | >= 1.36.0, < 1.36.1, >= 1.35.0, < 1.35.5, >= 1.34.0, < 1.34.9 |
Timeline
- Oct 16, 2025 CVE Published