CVE-2024-32974

MEDIUM
MEDIUM Priority: 0.04 BB Relevance: 62/100
Published: 2024-06-04 Modified: 2026-11-05 First seen: 2026-11-05 Status: active

Attack Surface

Network No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: High
PR: None
UI: None
S: Unchanged
C: None
I: None
A: High

Description

Envoy is a cloud-native, open source edge and service proxy. A crash was observed in `EnvoyQuicServerStream::OnInitialHeadersComplete()` with following call stack. It is a use-after-free caused by QUICHE continuing push request headers after `StopReading()` being called on the stream. As after `StopReading()`, the HCM's `ActiveStream` might have already be destroyed and any up calls from QUICHE could potentially cause use after free.

Weakness Classification (1)

Affected Software (5)

VendorProductVersion
envoyproxy envoy < 1.27.6
envoyproxy envoy >= 1.30.0, <= 1.30.1
envoyproxy envoy >= 1.29.0, <= 1.29.4
envoyproxy envoy >= 1.28.0, <= 1.28.3
envoyproxy envoy <= 1.27.5

References & Advisories (1)

Bug Bounty Relevance

62 / 100
✓ Network accessible
✓ No authentication
✓ No user interaction

CVSS Score

5.9 / 10.0 v3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

0.69%
Raw Score 0.006930
Percentile 53.5%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00693
2026-11-13
0.00693
2026-11-12
0.00693
2026-11-10
0.00693
2026-11-09
0.00693
2026-11-08
0.00693
2026-11-07
0.00693
2026-11-06
0.00693
2026-11-05
0.00693

Intelligence Sources

mitre ref →
nvd ref →