7.5

CVE-2026-33257: powerdns authoritative

CVSS: 7.5v3.1HighAnalyzed
AliasesUBUNTU-CVE-2026-33257DEBIAN-CVE-2026-33257
Published 22-04-2026Last modified 22-04-2026
Open JSON

Vulnerability summary

CVE-2026-33257 is a high (CVSS 7.5) vulnerability in powerdns authoritative. EPSS estimates a 1.06% chance of exploitation in the next 30 days, higher than 63.9% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
1.06%
0%100%
Low · +0.54 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 3 · Related 3
OPENSUSE-SU-2026:10632-1OPENSUSE-SU-2026:21015-1SUSE-SU-2026:22319-1

Timeline

  1. 22-04-2026
    PublishedVulnerability first disclosed.
  2. 22-04-2026
    Last modifiedVulnerability information updated.

Description

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 metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

1.06%

Chance of exploitation in the next 30 days

Percentile

64%

Versus all other CVEs

30-day change

+0.54 pp

From 0.51% on 20-09-2026

20-09-202620-10-2026
EPSS score
1.06%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian3 products
  • dnsdistAll versions (No fix recorded) | < 1.9.14-0+deb13u1 | < 2.0.4-1
  • pdnsAll versions (No fix recorded) | < 4.9.14-0+deb13u1 | < 5.0.4-1
  • pdns-recursorAll versions (No fix recorded) | < 5.2.9-0+deb13u1 | < 5.3.0-1
Powerdns3 products
  • authoritative≥ 4.9.0, < 4.9.14 | ≥ 5.0.0, < 5.0.4
  • dnsdist≥ 1.9.0, < 1.9.13 | ≥ 2.0.0, < 2.0.4
  • recursor≥ 5.4.0, < 5.4.1 | ≥ 5.2.0, < 5.2.9 | ≥ 5.3.0, < 5.3.6 | 5.4.0
Ubuntu3 products
  • dnsdistAll versions (No fix recorded)
  • pdnsAll versions (No fix recorded)
  • pdns-recursorAll versions (No fix recorded)

3 vendors · 9 products

References

9 links