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CVE-2025-30157— Envoy crashes when HTTP ext_proc processes local replies

Quick assessment

Affected
envoyproxy envoy
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Envoy是Enphase开源的一款用于连接智能家居设备的网关程序。 Envoy 1.33.1之前版本、1.32.4之前版本、1.31.6之前版本和1.30.10之前版本存在安全漏洞，该漏洞源于ext_proc HTTP过滤器的生命周期问题，可能导致崩溃。

CVSS 6.5 · Medium EPSS 0.43% · P35
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I. Basic Information for CVE-2025-30157

Vulnerability Information
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Vulnerability Title
Envoy crashes when HTTP ext_proc processes local replies
Source: CVE Program / CVE List V5
Vulnerability Description
Envoy is a cloud-native high-performance edge/middle/service proxy. Prior to 1.33.1, 1.32.4, 1.31.6, and 1.30.10, Envoy's ext_proc HTTP filter is at risk of crashing if a local reply is sent to the external server due to the filter's life time issue. A known situation is the failure of a websocket handshake will trigger a local reply leading to the crash of Envoy. This vulnerability is fixed in 1.33.1, 1.32.4, 1.31.6, and 1.30.10.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
抛出异常的清理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Envoy 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Envoy是Enphase开源的一款用于连接智能家居设备的网关程序。 Envoy 1.33.1之前版本、1.32.4之前版本、1.31.6之前版本和1.30.10之前版本存在安全漏洞，该漏洞源于ext_proc HTTP过滤器的生命周期问题，可能导致崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
envoyproxy envoy >= 1.33.0, < 1.33.1 -

II. Public POCs for CVE-2025-30157

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III. Intelligence Information for CVE-2025-30157

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Patches & Fixes for CVE-2025-30157 (1)

Vendor Advisories for CVE-2025-30157 (1)

IV. Related Vulnerabilities

Same product: envoy
Same vendor: envoyproxy
Same weakness: CWE-460

V. Comments for CVE-2025-30157

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