CVE•Published 2026-04-22•Modified 2026-04-27•0 articles on news•5 live references•NVD data

CVE-2026-33261Powerdns · Recursor

Vulnerability data via NVD (ingested)

CVSS v3.1

5.9

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS percentile

Exploit Prediction Scoring System · top 100% of all CVEs

Weaknesses (CWE)

CWE-353Missing Support for Integrity Check

Description

A zone transition from NSEC to NSEC3 might trigger an internal inconsistency and cause a denial of service.

Timeline

Published 2026-04-22

Modified 2026-04-27

External references

NVD MITRE Exploit-DB Sploitus VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-33261

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Powerdns Recursor"

All exposed Powerdns Recursor instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Recursor"

HTTP body or banner mentions "Recursor" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-33261

Country / ASN / product breakdown for the vuln query.

Censys

vulnerabilities.cve_id: CVE-2026-33261

Censys host search filtered to this CVE id.

grep.app

CVE-2026-33261

Public source-code mentions — fast PoC discovery.

GitHub code

CVE-2026-33261

GitHub code search for direct mentions.

Google dork

"CVE-2026-33261" exploit -site:nvd.nist.gov

Write-ups and news, NVD excluded.

Known PoCs on GitHub

No public proof-of-concept repositories found for CVE-2026-33261 on GitHub.

We haven't classified any articles referencing CVE-2026-33261 yet. The external references above still apply.