8.2

CVE-2025-59023: powerdns recursor Authentication Bypass by Capture-replay

CVSS: 8.2v3.1HighAnalyzed
AliasesUBUNTU-CVE-2025-59023DEBIAN-CVE-2025-59023
Published 09-02-2026Last modified 09-02-2026
Open JSON

Vulnerability summary

CVE-2025-59023 is a high (CVSS 8.2) Authentication Bypass by Capture-replay vulnerability in powerdns recursor. EPSS estimates a 0.30% chance of exploitation in the next 30 days, higher than 21.7% of scored vulnerabilities.

Overall risk
33/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.2/10
010
High · v3.1 (CVE.org)
EPSS score
0.30%
0%100%
Low · +0.03 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1
DSA-6045-1

Timeline

  1. 09-02-2026
    PublishedVulnerability first disclosed.
  2. 09-02-2026
    Last modifiedVulnerability information updated.

Description

Crafted delegations or IP fragments can poison cached delegations in Recursor.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.30%

Chance of exploitation in the next 30 days

Percentile

22%

Versus all other CVEs

30-day change

+0.03 pp

From 0.28% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.30%

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

Debian1 product
  • pdns-recursorAll versions (No fix recorded) | < 5.2.6-0+deb13u1 | < 5.3.1-1
Powerdns1 product
  • recursor≥ 5.1.0, < 5.1.8 | ≥ 5.2.0, < 5.2.6 | ≥ 5.3.0, < 5.3.1
Ubuntu1 product
  • pdns-recursorAll versions (No fix recorded)

3 vendors · 3 products

References

4 links