CVE-2026-42000
CVE-2026-42000 is a medium-severity vulnerability in Powerdns Authoritative with a CVSS 3.x base score of 6.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-77.
Key facts
- Severity: Medium (CVSS 3.x base score 6.8)
- EPSS exploit prediction: 1% (43rd percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-31261
- Weakness: CWE-77
- Affected product: Powerdns Authoritative
- Published:
- Last modified:
Description
Insufficient Validation of Names During AXFR
Frequently asked questions
- What is CVE-2026-42000?
- Insufficient Validation of Names During AXFR
- How severe is CVE-2026-42000?
- CVE-2026-42000 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
- Is CVE-2026-42000 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-42000?
- CVE-2026-42000 affects Powerdns Authoritative. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-42000?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-42000 have an EU (EUVD) identifier?
- Yes. CVE-2026-42000 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31261.
- When was CVE-2026-42000 published?
- CVE-2026-42000 was published on 2026-05-21 and last updated on 2026-07-23.
References
Affected products (1)
- cpe:2.3:a:powerdns:authoritative:*:*:*:*:*:*:*:*
More vulnerabilities in Powerdns Authoritative
- CVE-2020-24698 — Critical (CVSS 9.8): An issue was discovered in PowerDNS Authoritative through 4.3.0 when --enable-experimental-gss-tsig is used. A remote,…
- CVE-2020-24696 — High (CVSS 8.1): An issue was discovered in PowerDNS Authoritative through 4.3.0 when --enable-experimental-gss-tsig is used. A remote,…
- CVE-2015-5470 — High (CVSS 7.8): The label decompression functionality in PowerDNS Recursor before 3.6.4 and 3.7.x before 3.7.3 and Authoritative (Auth)…
- CVE-2015-1868 — High (CVSS 7.8): The label decompression functionality in PowerDNS Recursor 3.5.x, 3.6.x before 3.6.3, and 3.7.x before 3.7.2 and…
- CVE-2026-42001 — High (CVSS 7.5): Insufficient Validation of Autoprimary SOA Queries
- CVE-2020-24697 — High (CVSS 7.5): An issue was discovered in PowerDNS Authoritative through 4.3.0 when --enable-experimental-gss-tsig is used. A remote,…
All CVEs affecting Powerdns Authoritative →
Other CWE-77 (Command Injection) vulnerabilities
- CVE-2026-105484 — Critical (CVSS 10.0): A security vulnerability has been detected in TOTOLINK X6000R 9.4.0cu.652_B20230116. The impacted element is the…
- CVE-2026-105134 — Critical (CVSS 10.0): A flaw has been found in Ahsay AhsayCBS up to 10.3.2. This vulnerability affects unknown code of the file…
- CVE-2026-102240 — Critical (CVSS 10.0): A vulnerability was found in Netcore NAP930 0.1.241010.141410. This affects the function eval of the file…
- CVE-2026-101076 — Critical (CVSS 10.0): A vulnerability was detected in Netcore NR289-GE 1.4.5102. This affects the function system of the file…
- CVE-2026-101075 — Critical (CVSS 10.0): A security vulnerability has been detected in Netcore NR289-GE 1.4.5102. The impacted element is the function system of…
- CVE-2026-101072 — Critical (CVSS 10.0): A vulnerability was identified in Netcore NR289-GE 1.4.5102. This issue affects the function system of the file…