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TI-2022-20043 Aliases CVE-2022-41648GHSA-jc9h-j7vp-j9jw

Improper authentication in HEIDENHAIN Controller TNC 640 NC Software

Priority MEDIUM 43CWE-1188Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-287.

Summary

The HEIDENHAIN Controller TNC 640 NC software Version 340590 07 SP5, is vulnerable to improper authentication in its DNC communication for CNC machines. Authentication is not enabled by default for DNC communication. This vulnerability may allow an attacker to deny service on the production line, steal sensitive data from the production line, and alter any products created by the production line. Note: CNC machines running the TNC 640 controller require DNC to be enabled for DNC communication to be present.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00871 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
No
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
HEIDENHAINHEIDENHAIN Controller TNC 640 NC Software340590 07 SP5—No fix listedCNA
  • HEIDENHAIN Controller TNC 640 NC Software VendorHEIDENHAIN Affected 340590 07 SP5 Fixed in — No fix listed CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:heidenhain:tnc_640_programming_station:340590_07:sp5:*:*:*:*:*:*340590_07 sp5VulnerableHEIDENHAIN
cpe:2.3:o:heidenhain:heros:5.08.3:*:*:*:*:*:*:*5.08.3VulnerableHEIDENHAIN
cpe:2.3:h:heidenhain:tnc_640:-:*:*:*:*:*:*:*not specified by NVDRunning onHEIDENHAIN
  • cpe:2.3:a:heidenhain:tnc_640_programming_station:340590_07:sp5:*:*:*:*:*:* Versions 340590_07 sp5 Vulnerable ·HEIDENHAIN
  • cpe:2.3:o:heidenhain:heros:5.08.3:*:*:*:*:*:*:* Versions 5.08.3 Vulnerable ·HEIDENHAIN
  • cpe:2.3:h:heidenhain:tnc_640:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·HEIDENHAIN

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-41648
  2. 2026-10-03 Alias added: GHSA-jc9h-j7vp-j9jw

References

Advisory 1

Other 1

Sources

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