CVE-2026-42477
Last modified
CVE-2026-42477 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. A heap-based out-of-bounds read vulnerability in RWObj_Reader::read in the OBJ file parser in Open CASCADE Technology (OCCT) V8_0_0_rc5 allows user-assisted attackers to cause a denial of service or obtain sensitive information by persuading a victim to open a crafted OBJ file. The issue occurs because Standard_ReadLineBuffer::ReadLine() can return a 1-byte buffer for a minimal OBJ line, and RWObj_Reader::read() calls pushIndices(aLine + 2) without validating the buffer length.. EPSS estimates a 0.10% chance of exploitation in the next 30 days.
Description
A heap-based out-of-bounds read vulnerability in RWObj_Reader::read in the OBJ file parser in Open CASCADE Technology (OCCT) V8_0_0_rc5 allows user-assisted attackers to cause a denial of service or obtain sensitive information by persuading a victim to open a crafted OBJ file. The issue occurs because Standard_ReadLineBuffer::ReadLine() can return a 1-byte buffer for a minimal OBJ line, and RWObj_Reader::read() calls pushIndices(aLine + 2) without validating the buffer length.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Opencascade | Open Cascade Technology | <= 7.9.3 | — |
| Opencascade | Open Cascade Technology | 8.0.0 | Beta1 |
References
- https://gist.github.com/sgInnora/dfba083d04906283e9c92aea78e2d94aThird Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2026-42477?
How severe is CVE-2026-42477?
How do I fix CVE-2026-42477?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-42471Unsafe deserialization vulnerability in MixPHP Framework 2.x…8.1
- CVE-2026-42472Unsafe deserialization vulnerability in MixPHP Framework 2.x…9.8
- CVE-2026-42473Unsafe deserialization vulnerability in MixPHP Framework 2.x…9.8
- CVE-2026-42474SQL injection vulnerability in MixPHP Framework 2.x thru 2.2…6.5
- CVE-2026-42475SQL injection vulnerability in MixPHP Framework 2.x thru 2.2…6.5
- CVE-2026-42476Two heap-based out-of-bounds read vulnerabilities in the STL…7.1
- CVE-2026-42478An issue was discovered in VrmlData_IndexedFaceSet::TShape i…7.5
- CVE-2026-42479An out-of-bounds read vulnerability in VrmlData_IndexedLineS…5.5
- CVE-2026-4248The Ultimate Member plugin for WordPress is vulnerable to Se…8
- CVE-2026-42480A stack-based out-of-bounds read vulnerability in VrmlData_S…5.5
- CVE-2026-42481Open CASCADE Technology (OCCT) V8_0_0_rc5 contains multiple …5.5
- CVE-2026-42482A stack-based buffer overflow in mangle_to_hex_lower() and m…9.8
Are you affected by CVE-2026-42477?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST