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TI-2024-36137 Aliases CVE-2024-53977GHSA-rxxw-q6vh-r7c8

Uncontrolled search path in Siemens ModelSim

Priority LOW 25CWE-427Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
Passive
Attack complexity
Low
Attack requirements
Present
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-427.

Summary

A vulnerability has been identified in ModelSim (All versions < V2025.1), Questa (All versions < V2025.1). An example setup script contained in affected applications allows a specific executable file to be loaded from the current working directory. This could allow an authenticated local attacker to inject arbitrary code and escalate privileges in installations where administrators or processes with elevated privileges launch the script from a user-writable directory.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00155 4th percentileScored 2026-11-07
Fix Fixed ModelSim (Siemens): V2025.1Questa (Siemens): V2025.1

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
SiemensModelSimbefore V2025.1V2025.1Patch availableCNA
SiemensQuestabefore V2025.1V2025.1Patch availableCNA
  • ModelSim VendorSiemens Affected before V2025.1 Fixed in V2025.1 Patch available CNA
  • Questa VendorSiemens Affected before V2025.1 Fixed in V2025.1 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:siemens:modelsim:*:*:*:*:*:*:*:*before 2025.1VulnerableSiemens
cpe:2.3:a:siemens:questa:*:*:*:*:*:*:*:*before 2025.1VulnerableSiemens
  • cpe:2.3:a:siemens:modelsim:*:*:*:*:*:*:*:* Versions before 2025.1 Vulnerable ·Siemens
  • cpe:2.3:a:siemens:questa:*:*:*:*:*:*:*:* Versions before 2025.1 Vulnerable ·Siemens

Remediation

  • Fix · CNA ModelSim (Siemens) Fixed in V2025.1
  • Fix · CNA Questa (Siemens) Fixed in V2025.1

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-53977
  2. 2026-10-03 Alias added: GHSA-rxxw-q6vh-r7c8

References

Advisory 1

  • TI-2021-18544 Insufficiently protected credentials in Siemens ModelSim Simulation CVSS 3.1MEDIUM 6.5
  • TI-2024-31562 Uncontrolled search path in Siemens ModelSim CVSS 4.0MEDIUM 5.4
  • TI-2024-31561 Uncontrolled search path in Siemens ModelSim CVSS 4.0MEDIUM 5.4
  • TI-2024-31560 Uncontrolled search path in Siemens ModelSim CVSS 4.0MEDIUM 5.4

Sources

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