PT-2026-22064 · Rldns · Rldns

Antoniusrobotsoft + 1 · Published 2026-02-26 · Updated 2026-03-03 · CVE-2026-27831

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions rldns versions prior to 1.4

Description rldns is an open source DNS server. A heap-based out-of-bounds read exists that can lead to a denial of service.

Recommendations Update to version 1.4 or later.

Exploit

Fix

DoS

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

CVE-2026-27831

Affected Products

Rldns

References · 9

• 🔥 https://github.com/bluedragonsecurity/rldns/security/advisories/GHSA-fv38-45j4-g9x4 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-27831 · Security Note
• https://github.com/bluedragonsecurity/rldns_archives/blob/main/diff/rldns-1.4.diff · Note
• https://github.com/bluedragonsecurity/rldns-1.3-heap-out-of-bounds-vulnerability-fixed-in-rldns-1.4 · Note
• https://twitter.com/VulmonFeeds/status/2027052333641691141 · Twitter Post
• https://twitter.com/cracbot/status/2028787624174047336 · Twitter Post
• https://medium.com/@w1sdom/heap-based-buffer-over-read-vulnerability-in-rldns-1-3-5da3bccdc031 · Note
• https://t.me/cveNotify/153530 · Telegram Post
• https://twitter.com/CVEnew/status/2027004246621569403 · Twitter Post