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Vulnerability record · CVE-2026-42002 · published 21 May 2026
CVE-2026-42002: Powerdns authoritative vulnerability
Powerdns · Authoritative
Concurrency and locking defects in GSS-TSIG
7.5 CVSS 3.1 High EPSS 0.58% · top 54.5% CWE-364 · CWE-364
7.5CVSS 3.1 base score
0.58%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
23 Jul 2026Last modified by NVD
Description
Concurrency and locking defects in GSS-TSIG
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.
References
Track CVE-2026-42002 inside VULONE
Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.
Related vulnerabilities
Same products first, then exploited flaws of the same weakness class.
9.8CVE-2026-33608Powerdns authoritative code injection vulnerabilityAn attacker can send a notify request that causes a new secondary domain to be added to the bind backend, but causes said backend to update its confi…EPSS 0.59%9.8CVE-2020-24698Powerdns authoritative double free vulnerabilityAn issue was discovered in PowerDNS Authoritative through 4.3.0 when --enable-experimental-gss-tsig is used. A remote, unauthenticated attacker might…EPSS 3.2%8.6CVE-2026-42000Powerdns authoritative command injection vulnerabilityInsufficient Validation of Names During AXFREPSS 0.54%8.1CVE-2020-24696Powerdns authoritative race condition vulnerabilityAn issue was discovered in PowerDNS Authoritative through 4.3.0 when --enable-experimental-gss-tsig is used. A remote, unauthenticated attacker can t…EPSS 1.4%7.8CVE-2015-5470Powerdns authoritative vulnerabilityThe label decompression functionality in PowerDNS Recursor before 3.6.4 and 3.7.x before 3.7.3 and Authoritative (Auth) Server before 3.3.3 and 3.4.x…EPSS 11%7.8CVE-2015-1868PowerDNS label decompression self-referential name denial of serviceThe label decompression code in PowerDNS Recursor (3.5.x, 3.6.x before 3.6.3, 3.7.x before 3.7.2) and Authoritative Server (3.2.x, 3.3.x before 3.3.2…EPSS 82%analysed7.5CVE-2026-42001Powerdns authoritative uncontrolled resource consumption vulnerabilityInsufficient Validation of Autoprimary SOA QueriesEPSS 0.80%7.5CVE-2026-33610Powerdns authoritative uncontrolled resource consumption vulnerabilityA rogue primary server may cause file descriptor exhaustion and eventually a denial of service, when a PowerDNS secondary server forwards a DNS updat…EPSS 0.73%
Source: NIST National Vulnerability Database (record CVE-2026-42002), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.
