CVE-2026-42481Disclosure(opencascade / open_cascade_technology)

LOWCVSS 5.5 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

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.

opencascade CVEs Back to dashboard

0.0/ 10 priority

Sources & remediation

Vendor / third-party advisories

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

Weakness type (CWE)

CWE-125

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

open_cascade_technology

Threat summary

4 mentions across 2 observed days
Momentum state: stable

What's happening

Technical details provided in 4 signals
Disclosure: 2 classified signals
General: 2 classified signals
Peaked 1d ago at 3 mentions (2026-05-01); latest day: 1
4 total mentions across 2 days

Affected systems

Vendors

opencascade

Products

open_cascade_technology

1 version affected across 1 product

Deep dive

Activity timeline4 mentions / 2d

Signal classification2 categories

Disclosure

250.0%

General

250.0%

Referenced assets4 URLs

By indicator

Classification over time

Date	Total	Labels

2026-05-01	3	Disclosure2General1
2026-09-02	1	General1

Full discourse4 posts

Colin Gilchrist@PhillipsColinG37d
General
@CalebChamberla6 @BishopAerospace @jimbelosic @sendcutsend @grok Technically; you're both right, but in different ways. There are known vulnerabilities which target the CAD import parsers. The exploits work by injecting explicitly malformed data into an otherwise ordinary STEP file. CVE-2026-42481 for example.
Post summary
The post highlights CVE‑2026‑42481 as a known vulnerability that exploits malformed STEP files, but provides no PoC, exploit code, active‑use evidence, or patch details.
1002069
1.3K followersView on X
CVE@CVEnew160d
Disclosure
CVE-2026-42481 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. The… https://www.cve.org/CVERecord?id=CVE-2026-42481
Post summary
The post discloses a CVE affecting Open CASCADE Technology’s IGES and STEP file parsers, with no PoC, exploit code, active exploitation, or patch discussed.
00010215
57.4K followersView on X
Vulmon Vulnerability Feed@VulmonFeeds160d
General
CVE-2026-42481 Multiple Out-of-Bounds Read and Infinite Recursion Vulnerabilitie... https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-42481 Vulnerability Alert Subscriptions: https://alerts.vulmon.com/?utm_source=twitter&utm_medium=social&utm_campaign=2102281&utm_content=1
Post summary
The tweet announces CVE-2026-42481 as a set of out‑of‑bounds read and infinite recursion issues, linking to a Vulmon details page, but provides no PoC, exploit, patch information, or evidence of active exploitation.
0000051
4.0K followersView on X
Infoflowcloud@infoflowcloud160d
Disclosure
🚨*CVE* CVE-2026-42481 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. The… https://www.cve.org/CVERecord?id=CVE-2026-42481 ----- Traducción: CVE-2026-42481 Ope… http://infoflow.cloud`
Post summary
The tweet announces CVE‑2026‑42481, highlighting multiple parser vulnerabilities in Open CASCADE Technology that can be triggered by crafted IGES or STEP files, with no mention of exploitation or mitigation.
0000030
75 followersView on X

CPE platform detail7 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

7 of 7 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	opencascade	open_cascade_technology	-	-	-
App	opencascade	open_cascade_technology	8.0.0	-	-
App	opencascade	open_cascade_technology	8.0.0	-	-
App	opencascade	open_cascade_technology	8.0.0	-	-
App	opencascade	open_cascade_technology	8.0.0	-	-
App	opencascade	open_cascade_technology	8.0.0	-	-
App	opencascade	open_cascade_technology	8.0.0	-	-

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What researchers are saying

CVE-2026-42481

Colin Gilchrist[verified]@PhillipsColinGGeneral

The post highlights CVE‑2026‑42481 as a known vulnerability that exploits malformed STEP files, but provides no PoC, exploit code, active‑use evidence, or patch details.

CVE@CVEnewDisclosure

The post discloses a CVE affecting Open CASCADE Technology’s IGES and STEP file parsers, with no PoC, exploit code, active exploitation, or patch discussed.

Vulmon Vulnerability Feed@VulmonFeedsGeneral

The tweet announces CVE-2026-42481 as a set of out‑of‑bounds read and infinite recursion issues, linking to a Vulmon details page, but provides no PoC, exploit, patch information, or evidence of active exploitation.

Infoflowcloud@infoflowcloudDisclosure

The tweet announces CVE‑2026‑42481, highlighting multiple parser vulnerabilities in Open CASCADE Technology that can be triggered by crafted IGES or STEP files, with no mention of exploitation or mitigation.