CVE-2026-42000: powerdns authoritative Command Injection
CVSS: 8.6v3.1HighAnalyzed
AliasesUBUNTU-CVE-2026-42000DEBIAN-CVE-2026-42000
Published 21-05-2026Last modified 21-05-2026
Vulnerability summary
CVE-2026-42000 is a high (CVSS 8.6) Command Injection vulnerability in powerdns authoritative. EPSS estimates a 0.54% chance of exploitation in the next 30 days, higher than 44.1% of scored vulnerabilities.
CVSS score
8.6/10
010
High · v3.1 (NVD)EPSS score
0.54%
0%100%
Low · +0.29 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 21-05-2026PublishedVulnerability first disclosed.
- 21-05-2026Last modifiedVulnerability information updated.
Description
Insufficient Validation of Names During AXFR
CVSS metrics
4 scores · 4 sources · 1 versionHigh 8.6Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:HSources4 sources · 6.8–8.6
- CVE.orgCNA6.8MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:NDiffers
- OSV · UbuntuEcosystem advisory · calculated8.6HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated8.6HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
EPSS trend
Probability
0.54%
Chance of exploitation in the next 30 days
Percentile
44%
Versus all other CVEs
30-day change
+0.29 pp
From 0.24% on 20-09-2026
20-09-202620-10-2026
EPSS score0.54%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Debian1 product
- pdnsAll versions (No fix recorded) | < 4.9.15-0+deb13u1 | < 5.0.5-1
Powerdns1 product
- authoritative≥ 4.9.0, < 4.9.15 | < 4.9.15 | ≥ 5.0.0, < 5.0.5
Ubuntu1 product
- pdnsAll versions (No fix recorded)
3 vendors · 3 products
