TI-2023-21303 Aliases CVE-2023-40487 GHSA-mcw3-9c29-vjv5

Use after free in Maxon Cinema 4D

LOW 36CWE-416Published 2024-05-03 · Updated 2024-08-02

Key facts

Attack vector: Local
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.

Summary

Maxon Cinema 4D SKP File Parsing Use-After-Free Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Maxon Cinema 4D. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of SKP files. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-21435.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00446 38th 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

Vendor	Product	Affected versions	Fixed in	Status	Source
Maxon	Cinema 4D	2023.2.1	—	No fix listed	CNA

Cinema 4D VendorMaxon Affected 2023.2.1 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:nemetschek:cinema_4d:2023.2.1:::::::*	2023.2.1	Vulnerable	Maxon

cpe:2.3:a:nemetschek:cinema_4d:2023.2.1:*:*:*:*:*:*:* Versions 2023.2.1 Vulnerable ·Maxon

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2023-40487
2026-10-03 Alias added: GHSA-mcw3-9c29-vjv5

References

Advisory 1

ZDI-23-1192

TI-2023-21307 Use after free in Maxon Cinema 4D CVSS 3.1HIGH 7.8
TI-2023-21306 Use after free in Maxon Cinema 4D CVSS 3.1HIGH 7.8
TI-2023-21305 Use after free in Maxon Cinema 4D CVSS 3.1HIGH 7.8
TI-2023-21304 Use after free in Maxon Cinema 4D CVSS 3.1HIGH 7.8
TI-2023-21302 Stack-based buffer overflow in Maxon Cinema 4D CVSS 3.1HIGH 7.8
TI-2023-21301 Stack-based buffer overflow in Maxon Cinema 4D CVSS 3.1HIGH 7.8

See all 10 →

Sources

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