VDB-360744 · CVE-2026-42481 · Nessus 311784

Open CASCADE Technology OCCT 8.0.0.rc5 EvalD0 out-of-bounds

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4.8	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Open CASCADE Technology OCCT 8.0.0.rc5. It has been declared as problematic. Affected is the function Geom2d_BSplineCurve::EvalD0. The manipulation results in out-of-bounds. This vulnerability is cataloged as CVE-2026-42481. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Open CASCADE Technology OCCT 8.0.0.rc5. It has been classified as problematic. Affected is the function Geom2d_BSplineCurve::EvalD0. The manipulation with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on availability. CVE summarizes:

Open CASCADE Technology (OCCT) V8_0_0_rc5 contains multiple vulnerabilities in its IGES and STEP file parsers that can be triggered by crafted IGES or STEP files. These issues include an out-of-bounds read in Geom2d_BSplineCurve::EvalD0 during IGES B-spline curve evaluation, an out-of-bounds read in MakeBSplineCurveCommon during STEP B-spline curve construction, and infinite recursion in StepShape_OrientedEdge::EdgeStart when processing a self-referential OrientedEdge entity. Successful exploitation may result in denial of service or unintended memory disclosure.

The advisory is shared for download at gist.github.com. This vulnerability is traded as CVE-2026-42481 since 04/27/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 311784 (Linux Distros Unpatched Vulnerability : CVE-2026-42481), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (311784). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Open CASCADE Technology

Name

OCCT

Version

8.0.0.rc5

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.9
VulDB Meta Temp Score: 4.8

VulDB Base Score: 4.3
VulDB Temp Score: 4.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

ADP CISA Base Score: 5.5
ADP CISA Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 311784
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-42481

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

04/27/2026 CVE reserved
05/01/2026 +4 days Advisory disclosed
05/01/2026 +0 days VulDB entry created
06/04/2026 +34 days VulDB entry last update

Sourcesinfo

Advisory: gist.github.com
Status: Not defined

CVE: CVE-2026-42481 (🔒)
GCVE (CVE): GCVE-0-2026-42481
GCVE (VulDB): GCVE-100-360744

Entryinfo

Created: 05/01/2026 18:24
Updated: 06/04/2026 08:15
Changes: 05/01/2026 18:24 (53), 05/03/2026 17:41 (2), 06/04/2026 08:15 (11)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.