CVE-2026-33598 Details
Description
A cached crafted response can cause an out-of-bounds read if custom Lua code calls getDomainListByAddress() or getAddressListByDomain() on a packet cache.
A vulnerability in PowerDNS DNSdist versions through 2.0.3 and 1.9.12 allows for an out-of-bounds read. This issue arises when custom Lua code invokes the functions getDomainListByAddress() or getAddressListByDomain() on a packet cache that contains a crafted response. The vulnerability can lead to a denial-of-service condition by causing excessive memory allocation.
Users can upgrade to PowerDNS DNSdist versions 1.9.13 or 2.0.4, where this vulnerability has been patched. Alternatively, avoid using the Lua functions getDomainListByAddress() or getAddressListByDomain() on packet caches.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 22, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-04.html | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-125 | Out-of-bounds Read | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| powerdns dnsdist | >= 1.9.0, < 1.9.13 >= 2.0.0, < 2.0.4 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 24, 2026 | Initial Analysis | [email protected] |
| Apr 22, 2026 | CVE Modified | CISA-ADP |
| Apr 22, 2026 | New CVE Received | [email protected] |