CVE-2026-33598
CVE-2026-33598 is a medium-severity vulnerability in Powerdns Dnsdist with a CVSS 3.x base score of 4.8. 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-125.
Key facts
- Severity: Medium (CVSS 3.x base score 4.8)
- EPSS exploit prediction: 1% (61st percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-24939
- Weakness: CWE-125
- Affected product: Powerdns Dnsdist
- Published:
- Last modified:
Description
A cached crafted response can cause an out-of-bounds read if custom Lua code calls getDomainListByAddress() or getAddressListByDomain() on a packet cache.
Frequently asked questions
- What is CVE-2026-33598?
- A cached crafted response can cause an out-of-bounds read if custom Lua code calls getDomainListByAddress() or getAddressListByDomain() on a packet cache.
- How severe is CVE-2026-33598?
- CVE-2026-33598 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability low.
- Is CVE-2026-33598 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-33598?
- CVE-2026-33598 affects Powerdns Dnsdist. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-33598?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-33598 have an EU (EUVD) identifier?
- Yes. CVE-2026-33598 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-24939.
- When was CVE-2026-33598 published?
- CVE-2026-33598 was published on 2026-04-22 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:powerdns:dnsdist:*:*:*:*:*:*:*:*
More vulnerabilities in Powerdns Dnsdist
- CVE-2017-7557 — High (CVSS 8.8): dnsdist version 1.1.0 is vulnerable to a flaw in authentication mechanism for REST API potentially allowing CSRF attack.
- CVE-2026-33593 — High (CVSS 7.5): A client can trigger a divide by zero error leading to crash by sending a crafted DNSCrypt query.
- CVE-2026-33602 — Medium (CVSS 6.5): A rogue backend can send a crafted UDP response with a query ID off by one related to the maximum configured value,…
- CVE-2026-24029 — Medium (CVSS 6.5): When the early_acl_drop (earlyACLDrop in Lua) option is disabled (default is enabled) on a DNS over HTTPs frontend…
- CVE-2026-27853 — Medium (CVSS 5.9): An attacker might be able to trigger an out-of-bounds write by sending crafted DNS responses to a DNSdist using the…
- CVE-2018-14663 — Medium (CVSS 5.9): An issue has been found in PowerDNS DNSDist before 1.3.3 allowing a remote attacker to craft a DNS query with trailing…
All CVEs affecting Powerdns Dnsdist →
Other CWE-125 (Out-of-bounds Read) vulnerabilities
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- CVE-2013-0767 — Critical (CVSS 10.0): The nsSVGPathElement::GetPathLengthScale function in Mozilla Firefox before 18.0, Firefox ESR 10.x before 10.0.12 and…