Project files are stored memory objects in the form of binary serialized data that can later be read and deserialized again to instantiate the original objects in memory. Malicious manipulation of these files may allow an attacker to corrupt memory.

References

• https://nvd.nist.gov/vuln/detail/CVE-2021-42698
• https://us-cert.cisa.gov/ics/advisories/icsa-21-308-02