CVEvulnerability

CVE-2020-9307

6.5 MEDIUM Published 2021-02-11 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-02-11
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.5 MEDIUM — CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 ([email protected])
6.1 MEDIUM — AV:A/AC:L/Au:N/C:N/I:N/A:C
Weaknesses
CWE-835

Description

Hirschmann OS2, RSP, and RSPE devices before HiOS 08.3.00 allow a denial of service. An unauthenticated, adjacent attacker can cause an infinite loop on one of the HSR ring ports of the device. This effectively breaks the redundancy of the HSR ring. If the attacker can perform the same attack on a second device, the ring is broken into two parts (thus disrupting communication between devices in the different parts).

Affected configurations

• belden hirschmann hios (>= 07.0.04 < 07.1.00) • belden hirschmann hios (>= 08.0.00 < 08.3.00)

Related

Weakness · CWE (1)

  • CWE-835 Loop with Unreachable Exit Condition weakness

References