CVEvulnerability
CVE-2026-27854
7.5 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2026-03-31
- Last modified
- 2026-07-25
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 4.8 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-416
Description
An attacker might be able to trigger a use-after-free by sending crafted DNS queries to a DNSdist using the DNSQuestion:getEDNSOptions method in custom Lua code. In some cases DNSQuestion:getEDNSOptions might refer to a version of the DNS packet that has been modified, thus triggering a use-after-free and potentially a crash resulting in denial of service.
Affected configurations
• powerdns dnsdist (>= 1.9.0 < 1.9.12)
• powerdns dnsdist (>= 2.0.0 < 2.0.3)
Related
Weakness · CWE (1)
- CWE-416 Use After Free weakness