CVEvulnerability

CVE-2021-27393

5.3 MEDIUM Published 2021-04-22 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-04-22
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:P/A:N
Weaknesses
CWE-330

Description

A vulnerability has been identified in Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2013.08), Nucleus Source Code (Versions including affected DNS modules). The DNS client does not properly randomize UDP port numbers of DNS requests. That could allow an attacker to poison the DNS cache or spoof DNS resolving.

Affected configurations

• siemens nucleus net • siemens nucleus readystart v3 (< 2013.08) • siemens nucleus source code

Related

Weakness · CWE (1)

  • CWE-330 Use of Insufficiently Random Values weakness

References