CVE-2026-27853
HIGH EPSS 38.4%
Published Mar 31, 20263mo ago · Modified Jun 17, 20261w ago
7.5 CVSS 3.1
Published Mar 31, 2026 3mo ago
Last Modified Jun 17, 2026 1w ago
Description
An attacker might be able to trigger an out-of-bounds write by sending crafted DNS responses to a DNSdist using the DNSQuestion:changeName or DNSResponse:changeName methods in custom Lua code. In some cases the rewritten packet might become larger than the initial response and even exceed 65535 bytes, potentially leading to a crash resulting in denial of service.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High
Threat Intelligence
EPSS Exploit Probability
38.4% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-787 Out-of-bounds Write Memory Safety
Affected Products 2
References 1
- dnsdist.org https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-02.html
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.