This vulnerability involves an out-of-bounds read in the VRML parser of OCCT V8_0_0_rc5, specifically in the VrmlData_IndexedLineSet::TShape function. The issue arises because coordIndex values extracted from the VRML input are directly used as indices into coordinate arrays without validating their range against the array size. This improper validation can cause the application to read memory outside the bounds of the array, resulting in a denial of service due to potential crashes or instability when processing crafted VRML files.

An attacker can cause a denial of service by supplying a specially crafted VRML file that triggers out-of-bounds reads during geometry processing. This may crash or destabilize applications using the vulnerable OCCT VRML parser. There is no indication of code execution or data corruption beyond denial of service. No known exploits are currently reported.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should avoid processing untrusted or unauthenticated VRML files with the affected OCCT version. Monitor vendor channels for updates or patches addressing this vulnerability.