CVE-2026-33256

highpriority · track · 30EPSS 0.006 · 49 %ileDEEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.61% (49th) EPSS

CVSS 7.5 · high

Is it mine?

17 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

An attacker can send a web request that causes unlimited memory allocation in the internal web server, leading to a denial of service. The internal web server is disabled by default.

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5.3–7.5

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Lsecondary · ENISA EU

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Lsecondary · security@open-xchange.comexploitability 3.9 · impact 1.4

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-770US

affected products (17)

Products and version ranges known to be affected.

Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
Open Source PowerDNS <5.2.9all versionscert_bundDE
Open Source PowerDNS <5.3.6all versionscert_bundDE
Open Source PowerDNS <5.4.1all versionscert_bundDE
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
SUSE openSUSEall versionscert_bundDEcpe:/o:suse:opensuse:-
cPanel cPanel/WHM <137.9999.104all versionscert_bundDE
Open Source PowerDNS< 5.2.9cert_bundDE
Open Source PowerDNS< 5.3.6cert_bundDE
Open Source PowerDNS< 5.4.1cert_bundDE
cPanel cPanel/WHM< 137.9999.104cert_bundDE
PowerDNS Recursor5.2.0 → 5.2.9enisa_euvdEU
PowerDNS Recursor5.3.0 → 5.3.6enisa_euvdEU
PowerDNS Recursor5.4.0 → 5.4.1enisa_euvdEU
powerdns recursor5.2.0 → 5.2.9nvdUScpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:*
powerdns recursor5.3.0 → 5.3.6nvdUScpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:*
powerdns recursor= 5.4.0nvdUScpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-1225PowerDNS: Mehrere SchwachstellenDeutsch2026-04-21csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in PowerDNS ausnutzen, um Sicherheitsvorkehrungen zu umgehen, und um einen Denial of Service Angriff durchzuführen.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund nvd NVD CVE.org MITRE

published 2026-04-22modified 2026-10-26

references (5)

External citations — patches, advisories, analysis.

scry

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