CVE-2026-33261

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 62/100
Published: 2026-04-22 Modified: 2026-10-26 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 zone transition from NSEC to NSEC3 might trigger an internal inconsistency and cause a denial of service.

Weakness Classification (1)

Affected Software (3)

VendorProductVersion
powerdns recursor 5.2.0 – 5.2.9
powerdns recursor 5.3.0 – 5.3.6
powerdns recursor 5.4.0

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

0.24%
Raw Score 0.002400
Percentile 15.1%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00240
2026-10-28
0.00240

Intelligence Sources

nvd ref →