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TI-2021-05535 Aliases CVE-2021-22642GHSA-f83w-fm29-6mfh

Ovarro TBox Uncontrolled Resource Consumption

Priority MEDIUM 40CWE-400Published · Updated

Key facts

Attack vector
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 · CNA. Fix status from CNA. Impact type from CWE-400.

Summary

An attacker could use specially crafted invalid Modbus frames to crash the Ovarro TBox system.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00876 59th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
OvarroTBoxLT2; MS-CPU32; MS-CPU32-S2; RM2; TG2—No fix listedCNA
  • TBox VendorOvarro Affected LT2; MS-CPU32; MS-CPU32-S2; RM2; TG2 Fixed in — No fix listed CNA

CPE configurations NVD · 15

CPEVersionsRoleVendor
cpe:2.3:a:ovarro:twinsoft:*:*:*:*:*:*:*:*before 12.4VulnerableOvarro
cpe:2.3:o:ovarro:tbox_lt2-530_firmware:*:*:*:*:*:*:*:*before 1.46VulnerableOvarro
cpe:2.3:h:ovarro:tbox_lt2-530:-:*:*:*:*:*:*:*not specified by NVDRunning onOvarro
cpe:2.3:o:ovarro:tbox_lt2-532_firmware:*:*:*:*:*:*:*:*before 1.46VulnerableOvarro
cpe:2.3:h:ovarro:tbox_lt2-532:-:*:*:*:*:*:*:*not specified by NVDRunning onOvarro
cpe:2.3:o:ovarro:tbox_lt2-540_firmware:*:*:*:*:*:*:*:*before 1.46VulnerableOvarro
cpe:2.3:h:ovarro:tbox_lt2-540:-:*:*:*:*:*:*:*not specified by NVDRunning onOvarro
cpe:2.3:o:ovarro:tbox_ms-cpu32_firmware:*:*:*:*:*:*:*:*before 1.46VulnerableOvarro
cpe:2.3:h:ovarro:tbox_ms-cpu32:-:*:*:*:*:*:*:*not specified by NVDRunning onOvarro
cpe:2.3:o:ovarro:tbox_ms-cpu32-s2_firmware:*:*:*:*:*:*:*:*before 1.46VulnerableOvarro
  • cpe:2.3:a:ovarro:twinsoft:*:*:*:*:*:*:*:* Versions before 12.4 Vulnerable ·Ovarro
  • cpe:2.3:o:ovarro:tbox_lt2-530_firmware:*:*:*:*:*:*:*:* Versions before 1.46 Vulnerable ·Ovarro
  • cpe:2.3:h:ovarro:tbox_lt2-530:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Ovarro
  • cpe:2.3:o:ovarro:tbox_lt2-532_firmware:*:*:*:*:*:*:*:* Versions before 1.46 Vulnerable ·Ovarro
  • cpe:2.3:h:ovarro:tbox_lt2-532:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Ovarro
  • cpe:2.3:o:ovarro:tbox_lt2-540_firmware:*:*:*:*:*:*:*:* Versions before 1.46 Vulnerable ·Ovarro
  • cpe:2.3:h:ovarro:tbox_lt2-540:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Ovarro
  • cpe:2.3:o:ovarro:tbox_ms-cpu32_firmware:*:*:*:*:*:*:*:* Versions before 1.46 Vulnerable ·Ovarro
  • cpe:2.3:h:ovarro:tbox_ms-cpu32:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Ovarro
  • cpe:2.3:o:ovarro:tbox_ms-cpu32-s2_firmware:*:*:*:*:*:*:*:* Versions before 1.46 Vulnerable ·Ovarro
Show 5 more CPE
CPEVersionsRoleVendor
cpe:2.3:h:ovarro:tbox_ms-cpu32-s2:-:*:*:*:*:*:*:*not specified by NVDRunning onOvarro
cpe:2.3:o:ovarro:tbox_rm2_firmware:*:*:*:*:*:*:*:*before 1.46VulnerableOvarro
cpe:2.3:h:ovarro:tbox_rm2:-:*:*:*:*:*:*:*not specified by NVDRunning onOvarro
cpe:2.3:o:ovarro:tbox_tg2_firmware:*:*:*:*:*:*:*:*before 1.46VulnerableOvarro
cpe:2.3:h:ovarro:tbox_tg2:-:*:*:*:*:*:*:*not specified by NVDRunning onOvarro
  • cpe:2.3:h:ovarro:tbox_ms-cpu32-s2:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Ovarro
  • cpe:2.3:o:ovarro:tbox_rm2_firmware:*:*:*:*:*:*:*:* Versions before 1.46 Vulnerable ·Ovarro
  • cpe:2.3:h:ovarro:tbox_rm2:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Ovarro
  • cpe:2.3:o:ovarro:tbox_tg2_firmware:*:*:*:*:*:*:*:* Versions before 1.46 Vulnerable ·Ovarro
  • cpe:2.3:h:ovarro:tbox_tg2:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Ovarro

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-22642
  2. 2026-10-03 Alias added: GHSA-f83w-fm29-6mfh

References

Advisory 1

  • TI-2021-05543 Ovarro TBox Relative Path Traversal CVSS 3.1CRITICAL 9.8
  • TI-2021-05537 Ovarro TBox Use of Hard-coded Cryptographic Key CVSS 3.1CRITICAL 9.8
  • TI-2021-05533 Ovarro TBox Insufficiently Protected Credentials CVSS 3.1CRITICAL 9.8
  • TI-2021-05539 Ovarro TBox Code Injection CVSS 3.1CRITICAL 9.8
  • TI-2021-05541 Ovarro TBox Incorrect Permission Assignment for Critical Resource CVSS 3.1CRITICAL 9.8

Sources

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