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CVE Vulnerability Details :
CVE-2026-27831
PUBLISHED
More InfoOfficial Page
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
View Known Exploited Vulnerability (KEV) details
Published At-26 Feb, 2026 | 00:11
Updated At-27 Feb, 2026 | 15:24
Rejected At-
▼CVE Numbering Authority (CNA)
rldns Vulnerable to Heap-based Out-of-Bounds Read

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.

Affected Products
Vendor
bluedragonsecurity
Product
rldns
Versions
Affected
  • = 1.3
Problem Types
TypeCWE IDDescription
CWECWE-125CWE-125: Out-of-bounds Read
Type: CWE
CWE ID: CWE-125
Description: CWE-125: Out-of-bounds Read
Metrics
VersionBase scoreBase severityVector
3.17.5HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Version: 3.1
Base score: 7.5
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/bluedragonsecurity/rldns/security/advisories/GHSA-fv38-45j4-g9x4
x_refsource_CONFIRM
https://github.com/bluedragonsecurity/rldns-1.3-heap-out-of-bounds-vulnerability-fixed-in-rldns-1.4
x_refsource_MISC
https://github.com/bluedragonsecurity/rldns_archives/blob/main/diff/rldns-1.4.diff
x_refsource_MISC
https://medium.com/@w1sdom/heap-based-buffer-over-read-vulnerability-in-rldns-1-3-5da3bccdc031
x_refsource_MISC
Hyperlink: https://github.com/bluedragonsecurity/rldns/security/advisories/GHSA-fv38-45j4-g9x4
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/bluedragonsecurity/rldns-1.3-heap-out-of-bounds-vulnerability-fixed-in-rldns-1.4
Resource:
x_refsource_MISC
Hyperlink: https://github.com/bluedragonsecurity/rldns_archives/blob/main/diff/rldns-1.4.diff
Resource:
x_refsource_MISC
Hyperlink: https://medium.com/@w1sdom/heap-based-buffer-over-read-vulnerability-in-rldns-1-3-5da3bccdc031
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/bluedragonsecurity/rldns/security/advisories/GHSA-fv38-45j4-g9x4
exploit
Hyperlink: https://github.com/bluedragonsecurity/rldns/security/advisories/GHSA-fv38-45j4-g9x4
Resource:
exploit
Details not found