How severe is CVE-2023-40491?

CVE-2023-40491 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-40491 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-40491?

CVE-2023-40491 affects Nemetschek Cinema 4d. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-40491?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2023-40491 have an EU (EUVD) identifier?

Yes. CVE-2023-40491 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-45062.

When was CVE-2023-40491 published?

CVE-2023-40491 was published on 2024-05-03 and last updated on 2026-06-17.

CVE-2023-40491

CVE-2023-40491 is a high-severity vulnerability in Nemetschek Cinema 4d with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-416.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-45062
Weakness: CWE-416
Affected product: Nemetschek Cinema 4d
Published: 2024-05-03
Last modified: 2026-06-17

Description

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-21439.

Frequently asked questions

What is CVE-2023-40491?: 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-21439.
How severe is CVE-2023-40491?: CVE-2023-40491 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-40491 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-40491?: CVE-2023-40491 affects Nemetschek Cinema 4d. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-40491?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2023-40491 have an EU (EUVD) identifier?: Yes. CVE-2023-40491 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-45062.
When was CVE-2023-40491 published?: CVE-2023-40491 was published on 2024-05-03 and last updated on 2026-06-17.

References

https://www.zerodayinitiative.com/advisories/ZDI-23-1191/

Affected products (1)

cpe:2.3:a:nemetschek:cinema_4d:2023.2.1:*:*:*:*:*:*:*

More vulnerabilities in Nemetschek Cinema 4d

CVE-2023-40490 — High (CVSS 7.8): Maxon Cinema 4D SKP File Parsing Use-After-Free Remote Code Execution Vulnerability. This vulnerability allows remote…
CVE-2023-40489 — High (CVSS 7.8): Maxon Cinema 4D SKP File Parsing Use-After-Free Remote Code Execution Vulnerability. This vulnerability allows remote…
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