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Vulnerability details: VCID-xasd-r2rc-2ufq
Vulnerability ID VCID-xasd-r2rc-2ufq
Aliases CVE-2026-33256
Summary 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.
Status Published
Exploitability 0.5
Weighted Severity 2.6
Risk 1.3
Affected and Fixed Packages Package Details
Weaknesses (0)
There are no known CWE.
System Score Found at
epss 3e-05 https://api.first.org/data/v1/epss?cve=CVE-2026-33256
epss 3e-05 https://api.first.org/data/v1/epss?cve=CVE-2026-33256
epss 3e-05 https://api.first.org/data/v1/epss?cve=CVE-2026-33256
cvssv3.1 5.3 https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdns-2026-03.html
ssvc Track https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdns-2026-03.html
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2026-33256
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-33256
powerdns-advisory-powerdns-2026-03.html https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdns-2026-03.html
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Found at https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdns-2026-03.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-04-22T17:54:46Z/ Found at https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdns-2026-03.html
Exploit Prediction Scoring System (EPSS)
Percentile 0.00114
EPSS Score 3e-05
Published At April 24, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-23T01:20:24.362740+00:00 Vulnrichment Import https://github.com/cisagov/vulnrichment/blob/develop/2026/33xxx/CVE-2026-33256.json 38.4.0