CVE-2025-54588

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Source

https://cve.org/CVERecord?id=CVE-2025-54588

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-54588.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2025-54588

Aliases

Published

2025-09-02T23:39:07.429Z

Modified

2026-04-10T05:29:38.026573Z

Severity

7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator

Summary

Envoy: Race condition in Dynamic Forward Proxy leads to use-after-free and segmentation faults

Details

Envoy is an open source L7 proxy and communication bus designed for large modern service oriented architectures. Versions 1.34.0 through 1.34.4 and 1.35.0 contain a use-after-free (UAF) vulnerability in the DNS cache, causing abnormal process termination. The vulnerability is in Envoy's Dynamic Forward Proxy implementation, occurring when a completion callback for a DNS resolution triggers new DNS resolutions or removes existing pending resolutions. This condition may occur when the following conditions are met: dynamic Forwarding Filter is enabled, the envoy.reloadable_features.dfp_cluster_resolves_hosts runtime flag is enabled, and the Host header is modified between the Dynamic Forwarding Filter and Router filters. This issue is resolved in versions 1.34.5 and 1.35.1. To work around this issue, set the envoy.reloadablefeatures.dfpclusterresolveshosts runtime flag to false.

Database specific

{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-416"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/54xxx/CVE-2025-54588.json"
}

References

Affected packages

Git / github.com/envoyproxy/envoy

Affected ranges

Type

GIT

Repo

https://github.com/envoyproxy/envoy

Events

Introduced

d7809ba2b07fd869d49bfb122b27f6a7977b4d94

Fixed

7e251c0145bb32a1ca7d7199ac0727765538d942

Database specific

{
    "versions": [
        {
            "introduced": "1.34.0"
        },
        {
            "fixed": "1.34.5"
        }
    ]
}

Type

GIT

Repo

https://github.com/envoyproxy/envoy

Events

Introduced

84305a6cb64bd55aaf606bdd53de7cd6080427a1

Fixed

6e9539d0366baf85baf9acb3e618cb3384765f13

Database specific

{
    "versions": [
        {
            "introduced": "1.35.0"
        },
        {
            "fixed": "1.35.1"
        }
    ]
}

Affected versions

v1.*

v1.34.0

v1.34.1

v1.34.2

v1.34.3

v1.34.4

v1.35.0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-54588.json"