CVE-2026-42387

MEDIUM
MEDIUM Priority: 0.03 BB Relevance: 62/100
Published: 2026-06-25 Modified: 2026-10-25 First seen: 2026-10-29 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

A malicious authoritative server can send a crafted zone via the ZoneToCache function that leads to a crash of the Recursor due to insuffcient input validation.

Weakness Classification (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

0.48%
Raw Score 0.004830
Percentile 41.6%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00483
2026-10-28
0.00483

Intelligence Sources

nvd ref →