CVE-2024-1300

MEDIUM
MEDIUM Priority: 0.06 BB Relevance: 61/100
Published: 2024-04-02 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: Low
I: None
A: Low

Description

A vulnerability in the Eclipse Vert.x toolkit causes a memory leak in TCP servers configured with TLS and SNI support. When processing an unknown SNI server name assigned the default certificate instead of a mapped certificate, the SSL context is erroneously cached in the server name map, leading to memory exhaustion. This flaw allows attackers to send TLS client hello messages with fake server names, triggering a JVM out-of-memory error.

Affected Software (1)

VendorProductVersion
— — 4.3.4

References & Advisories (11)

https://access.redhat.com/errata/RHSA-2024:1662
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:1706
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:1923
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:2088
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:2833
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:3527
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:3989
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:4884
vendor-advisory x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2263139
issue-tracking x_refsource_REDHAT

Bug Bounty Relevance

61 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

5.4 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L

EPSS — Exploitation Probability

1.06%
Raw Score 0.010640
Percentile 65.2%
Date 2026-11-14

EPSS Trend

2026-11-14
0.01064
2026-11-13
0.01064
2026-11-12
0.01064
2026-11-10
0.01064
2026-11-09
0.01064
2026-11-08
0.01064
2026-11-07
0.01064
2026-11-06
0.01064
2026-11-05
0.01064
2026-11-04
0.01064

Intelligence Sources

mitre ref →
nvd ref →