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TI-2020-07442 Aliases CVE-2020-9307GHSA-gfvh-r99j-x28p

Hirschmann OS2, RSP, and RSPE devices before HiOS 08.3.00 allow a denial of service.

Priority LOW 30CWE-835Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-835.

Summary

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).

Why it matters now

EPSS 0.00593 48th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:belden:hirschmann_hios:*:*:*:*:*:*:*:*07.0.04 to before 07.1.00; 08.0.00 to before 08.3.00VulnerableBelden
  • cpe:2.3:o:belden:hirschmann_hios:*:*:*:*:*:*:*:* Versions 07.0.04 to before 07.1.00; 08.0.00 to before 08.3.00 Vulnerable ·Belden

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-9307
  2. 2026-10-03 Alias added: GHSA-gfvh-r99j-x28p

References

Advisory 2

  • TI-2019-09143 Wind River VxWorks has a Buffer Overflow in the TCP component (issue 1 of 4). CVSS 3.1CRITICAL 9.8
  • TI-2019-09145 Wind River VxWorks 6.6 through 6.9 has a Buffer Overflow in the DHCP client component. CVSS 3.1HIGH 8.8
  • TI-2019-09144 Wind River VxWorks 6.9 and vx7 has a Buffer Overflow in the IPv4 component. CVSS 3.1CRITICAL 9.8
  • TI-2019-09148 Wind River VxWorks 6.9 and vx7 has a Buffer Overflow in the TCP component (issue 2 of 4). CVSS 3.1CRITICAL 9.8
  • TI-2019-09153 Wind River VxWorks 6.5, 6.6, 6.7, 6.8, 6.9.3 and 6.9.4 has a Memory Leak in the IGMPv3… CVSS 3.1MEDIUM 5.3
  • TI-2019-09149 Wind River VxWorks 6.7 though 6.9 and vx7 has a Buffer Overflow in the TCP component… CVSS 3.1CRITICAL 9.8
See all 13 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences