Memory corruption via unchecked MOC3 table metadata
Published Mar 3, 2023 · Updated Mar 6, 2025
Out-of-bounds write in Cubism Core in Live2D Cubism Editor 4.2.03 allows local users to corrupt memory via a crafted MOC3 file. Cubism Core trusts Section Offset Table offsets and Count Info Table values without adequate bounds checks, permitting writes beyond the MOC3 data buffer. The target must load the attacker-supplied model; the public demonstrator establishes an application crash, while code execution has not been demonstrated.
Summary
What happened
Out-of-bounds write in Cubism Core in Live2D Cubism Editor 4.2.03 allows local users to corrupt memory via a crafted MOC3 file. Cubism Core trusts Section Offset Table offsets and Count Info Table values without adequate bounds checks, permitting writes beyond the MOC3 data buffer. The target must load the attacker-supplied model; the public demonstrator establishes an application crash, while code execution has not been demonstrated.
The record
- CVE
- CVE-2023-27566
- Published
- Mar 3, 2023
- Updated
- Mar 6, 2025
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-787, T1204.002
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 3, 2023CVE publishedPublication date reported by the CVE source.
- Mar 6, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
- MOC3ingbird crafted-model demonstratorproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo