Vulnerability Report

CVE-2024-53271

Title: Envoyproxy Envoy

Other

Proof Of Concept

No public PoC currently indexed for CVE-2024-53271.

CWE Category CWE-670

Published Date Dec 18, 2024

Modified Date Sep 04, 2025

Exploit Status Not Found

Score 7.1 CVSS v3.1

Exploit Probability (EPSS)

0.62%

Vulnerability Summary

CVE-2024-53271: Envoy is a cloud-native high-performance edge/middle/service proxy. In affected versions envoy does not properly handle http 1.1 non-101 1xx responses. This can lead to downstream failures in networked devices. This issue has been addressed in versions 1.31.5 and 1.32.3. Users are advised to upgrade. There are no known workarounds for this issue.

Impacted Vendors

enphase 1

envoyproxy 1

Reference Links

https://github.com/envoyproxy/envoy/commit/da56f6da63079baecef9183436ee5f4141a59af8 https://github.com/envoyproxy/envoy/security/advisories/GHSA-rmm5-h2wv-mg4f https://github.com/envoyproxy/envoy/security/advisories/GHSA-rmm5-h2wv-mg4f

CVSS v3.1

Source Entity [email protected]

Severity HIGH

7.1

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

REQUIRED

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2024-53271 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

September 04, 2025 MODIFIED

Vulnerability data or affected products updated.

December 18, 2024 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity LOW

Privileges N/A

Interaction REQUIRED

CVSS Vector String


                                    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

Affected Stack

No specific products linked.