CVE-2024-1023

MEDIUM
MEDIUM Priority: 0.11 BB Relevance: 63/100
Published: 2024-03-27 Modified: 2026-11-05 First seen: 2026-11-05 Status: active

Attack Surface

Network Low Complexity No Interaction

CVSS Vector Breakdown

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

Description

A vulnerability in the Eclipse Vert.x toolkit results in a memory leak due to using Netty FastThreadLocal data structures. Specifically, when the Vert.x HTTP client establishes connections to different hosts, triggering the memory leak. The leak can be accelerated with intimate runtime knowledge, allowing an attacker to exploit this vulnerability. For instance, a server accepting arbitrary internet addresses could serve as an attack vector by connecting to these addresses, thereby accelerating the memory leak.

Affected Software (4)

VendorProductVersion
— — 4.4.5
— — 4.4.6
— — 4.5.0
— — 4.5.1

Bug Bounty Relevance

63 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

6.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

1.65%
Raw Score 0.016530
Percentile 77.0%
Date 2026-11-14

EPSS Trend

2026-11-14
0.01653
2026-11-13
0.01653
2026-11-12
0.01653
2026-11-10
0.01653
2026-11-09
0.01653
2026-11-08
0.01653
2026-11-07
0.01653
2026-11-06
0.01653
2026-11-05
0.01653
2026-11-04
0.01653

Intelligence Sources

mitre ref →
nvd ref →