CVE-2026-27831CWE-125

rldns Vulnerable to Heap-based Out-of-Bounds Read

High · published February 26, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
51.3
In the wild
Unconfirmed
What it is

rldns is an open source DNS server. Version 1.3 has a heap-based out-of-bounds read that leads to denial of service. Version 1.4 contains a patch for the issue.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00669 · 51.3th percentile
Weakness
CWE-125 · Out-of-bounds Read
Published
2026-02-26T00:11Z
EPSS history
Timeline
  • 26 FEB 00:11Z
    rldns Vulnerable to Heap-based Out-of-Bounds Read
    cvelistv5