CVSS 3.1 Score 7.5 of 10 (high)


Published Feb 9, 2024
Updated: Feb 15, 2024
CWE ID 755
CWE ID 248


CVE-2024-23325 is a vulnerability affecting Envoy, a high-performance edge/middle/service proxy. The vulnerability occurs when Envoy crashes in Proxy protocol while using an unsupported address type by the operating system. In specific circumstances where IPv6 is disabled on the host and a listener config with proxy protocol enabled receives a request with a client presenting its IPv6 address, Envoy can crash. To mitigate this vulnerability, users are advised to upgrade to the released versions 1.29.1, 1.28.1, 1.27.3, or 1.26.7 of Envoy. There are no known workarounds for this vulnerability, which has a base severity rating of HIGH and an exploitability score of 3.9 out of 10 according to [email protected]. The potential danger for organizations is the possibility of denial of service due to crashes in the affected Envoy instances.


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