CVE-2026-42479 Vulnerability Analysis & Exploit Details

CVE-2026-42479
Vulnerability Scoring

5.5

/10

Significant Risk

Security assessments indicate that CVE-2026-42479 presents a notable risk, potentially requiring prompt mitigation.

Attack Complexity Details

Attack Complexity: Low
Exploits can be performed without significant complexity or special conditions.
Attack Vector: Local
Vulnerability requires local system access.
Privileges Required: None
No privileges are required for exploitation.
Scope: Unchanged
Exploit remains within the originally vulnerable component.
User Interaction: Required
User interaction is necessary for successful exploitation.

CVE-2026-42479 Details

Status: Modified

Published on: 01 May 2026, 15:16 UTC

CVSS Release: version 3

CVSS3 Source

nvd@nist.gov

CVSS3 Type

Primary

CVSS3 Vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CVE-2026-42479 Vulnerability Summary

CVE-2026-42479: An out-of-bounds read vulnerability in VrmlData_IndexedLineSet::TShape in the VRML parser in Open CASCADE Technology (OCCT) V8_0_0_rc5 allows attackers to cause a denial of service via a crafted VRML file. The issue occurs because coordIndex values from parsed input are used as direct array indices without validation against the size of the coordinate array during geometry processing.

Assessing the Risk of CVE-2026-42479

Access Complexity Graph

The exploitability of CVE-2026-42479 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).

Exploitability Analysis for CVE-2026-42479

With low attack complexity and no required privileges, CVE-2026-42479 is an easy target for cybercriminals. Organizations should prioritize immediate mitigation measures to prevent unauthorized access and data breaches.

Understanding AC and PR

A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.

Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.

Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.

CVSS Score Breakdown Chart

Above is the CVSS Sub-score Breakdown for CVE-2026-42479, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.

CIA Impact Analysis

Below is the Impact Analysis for CVE-2026-42479, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

Confidentiality: None
CVE-2026-42479 has no significant impact on data confidentiality.
Integrity: None
CVE-2026-42479 poses no threat to data integrity.
Availability: High
CVE-2026-42479 can disrupt system operations, potentially causing complete denial of service (DoS).

CVE-2026-42479 References

External References

https://gist.github.com/sgInnora/dfba083d04906283e9c92aea78e2d94a

CWE Common Weakness Enumeration

CWE-125

CAPEC Common Attack Pattern Enumeration and Classification

Overread Buffers CAPEC-540 An adversary attacks a target by providing input that causes an application to read beyond the boundary of a defined buffer. This typically occurs when a value influencing where to start or stop reading is set to reflect positions outside of the valid memory location of the buffer. This type of attack may result in exposure of sensitive information, a system crash, or arbitrary code execution.

Vulnerable Configurations

cpe:2.3:a:opencascade:open_cascade_technology:6.5.0:*:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.5.0:*:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.5.1:*:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.5.1:*:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.5.2:*:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.5.2:*:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.5.3:-:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.5.3:-:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.5.3:beta1:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.5.3:beta1:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.5.4:-:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.5.4:-:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.5.4:beta1:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.5.4:beta1:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.5.5:*:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.5.5:*:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.6.0:-:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.6.0:-:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.6.0:beta:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.6.0:beta:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.7.0:-:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.7.0:-:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.7.0:beta:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.7.0:beta:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.7.1:-:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.7.1:-:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.7.1:p1:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.7.1:p1:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.7.1:beta:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.7.1:beta:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.7.2:*:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.7.2:*:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.8.0:-:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.8.0:-:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.8.0:p1:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.8.0:p1:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.8.0:beta:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.8.0:beta:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.9.0:-:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.9.0:-:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.9.0:p1:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.9.0:p1:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.9.0:beta:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.9.0:beta:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.9.0:beta1:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.9.0:beta1:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.9.0:beta2:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.9.0:beta2:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.9.1:-:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.9.1:-:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.9.1:beta:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:6.9.1:beta:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.0.0:-:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.0.0:-:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.0.0:rc:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.0.0:rc:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.0.0:beta:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.0.0:beta:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.0.0:fixj:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.0.0:fixj:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.0.1:fixj:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.0.1:fixj:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.1.0:-:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.1.0:-:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.1.0:p1:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.1.0:p1:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.1.0:beta:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.1.0:beta:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.2.0:-:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.2.0:-:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.2.0:p1:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.2.0:p1:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.2.0:p2:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.2.0:p2:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.2.0:p3:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.2.0:p3:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.2.0:beta:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.2.0:beta:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.3.0:-:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.3.0:-:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.3.0:p1:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.3.0:p1:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.3.0:p2:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.3.0:p2:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.3.0:p3:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.3.0:p3:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.3.0:p4:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.3.0:p4:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.3.0:beta:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.3.0:beta:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.4.0:-:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.4.0:-:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.4.0:p1:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.4.0:p1:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.4.0:p2:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.4.0:p2:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.4.0:beta:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.4.0:beta:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.5.0:-:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.5.0:-:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.5.0:p1:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.5.0:p1:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.5.0:beta:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.5.0:beta:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.5.1:*:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.5.1:*:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.5.2:*:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.5.2:*:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.5.3:-:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.5.3:-:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.5.3:p1:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.5.3:p1:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.5.3:p2:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.5.3:p2:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.5.3:p4:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.5.3:p4:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.5.3:p5:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.5.3:p5:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.6.0:-:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.6.0:-:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.6.0:beta:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.6.0:beta:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.6.1:*:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.6.1:*:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.6.2:*:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.6.2:*:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.6.3:*:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.6.3:*:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.7.0:-:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.7.0:-:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.7.0:beta:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.7.0:beta:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.7.1:*:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.7.1:*:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.7.2:*:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.7.2:*:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.8.0:*:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.8.0:*:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.8.1:*:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.8.1:*:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.9.0:-:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.9.0:-:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.9.0:beta1:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.9.0:beta1:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.9.0:beta2:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.9.0:beta2:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.9.1:*:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.9.1:*:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.9.2:*:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.9.2:*:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.9.3:*:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:7.9.3:*:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:8.0.0:beta1:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:8.0.0:beta1:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:8.0.0:rc1:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:8.0.0:rc1:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:8.0.0:rc2:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:8.0.0:rc2:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:8.0.0:rc3:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:8.0.0:rc3:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:8.0.0:rc4:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:8.0.0:rc4:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:8.0.0:rc5:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:8.0.0:rc5:*:*:*:*:*:*

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