CVE catalog

CVE-2026-42481

Severity: Medium · CVSS 5.5
Published: May 1, 2026, 4:16:32 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.10% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	opencascade	sid	`7.9.2+dfsg-5`	vulnerable
Debian	opencascade	forky	`7.9.2+dfsg-5`	vulnerable
Debian	opencascade	trixie	`7.8.1+dfsg1-3`	vulnerable
Debian	opencascade	bookworm	`7.6.3+dfsg1-7`	vulnerable
Cpe	opencascade	Not reported	Not reported	vulnerable
Cpe	open_cascade_technology	Not reported	Not reported	unknown

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	opencascade	source	sid	`(unfixed)`	not yet assigned	Not reported	[1136008]
Debian	opencascade	source	forky	`(unfixed)`	not yet assigned	Not reported	[1136008]
Debian	opencascade	source	trixie	`(unfixed)`	not yet assigned	Not reported	[1136008]
Debian	opencascade	source	bookworm	`(unfixed)`	not yet assigned	Not reported	[1136008]

[Debian bug #1136008]

Notes

[trixie] opencascade: Minor issue [bookworm] opencascade: Minor issue

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[libocct-data-exchange-7.6]Affected
Source package: [opencascade]
Details (2)
- 7.6.3+dfsg1-7 · amd64 · bookworm
  Affected
  nvd · opencascade · debian · bookworm; nvd · opencascade · debian · 12
- 7.6.3+dfsg1-7 · arm64 · bookworm
  Affected
  nvd · opencascade · debian · bookworm; nvd · opencascade · debian · 12
[libocct-data-exchange-dev]Affected
Source package: [opencascade]
Details (2)
- 7.6.3+dfsg1-7 · amd64 · bookworm
  Affected
  nvd · opencascade · debian · bookworm; nvd · opencascade · debian · 12
- 7.6.3+dfsg1-7 · arm64 · bookworm
  Affected
  nvd · opencascade · debian · bookworm; nvd · opencascade · debian · 12
[libocct-doc]Affected
Source package: [opencascade]
Details (2)
- 7.6.3+dfsg1-7 · all · bookworm
  Affected
  nvd · opencascade · debian · bookworm; nvd · opencascade · debian · 12
- 7.6.3+dfsg1-7 · all · bookworm
  Affected
  nvd · opencascade · debian · bookworm; nvd · opencascade · debian · 12
[libocct-draw-7.6]Affected
Source package: [opencascade]
Details (2)
- 7.6.3+dfsg1-7 · amd64 · bookworm
  Affected
  nvd · opencascade · debian · bookworm; nvd · opencascade · debian · 12
- 7.6.3+dfsg1-7 · arm64 · bookworm
  Affected
  nvd · opencascade · debian · bookworm; nvd · opencascade · debian · 12
[libocct-draw-dev]Affected
Source package: [opencascade]
Details (2)
- 7.6.3+dfsg1-7 · amd64 · bookworm
  Affected
  nvd · opencascade · debian · bookworm; nvd · opencascade · debian · 12
- 7.6.3+dfsg1-7 · arm64 · bookworm
  Affected
  nvd · opencascade · debian · bookworm; nvd · opencascade · debian · 12
[libocct-foundation-7.6]Affected
Source package: [opencascade]
Details (2)
- 7.6.3+dfsg1-7 · amd64 · bookworm
  Affected
  nvd · opencascade · debian · bookworm; nvd · opencascade · debian · 12
- 7.6.3+dfsg1-7 · arm64 · bookworm
  Affected
  nvd · opencascade · debian · bookworm; nvd · opencascade · debian · 12
[libocct-foundation-dev]Affected
Source package: [opencascade]
Details (2)
- 7.6.3+dfsg1-7 · amd64 · bookworm
  Affected
  nvd · opencascade · debian · bookworm; nvd · opencascade · debian · 12
- 7.6.3+dfsg1-7 · arm64 · bookworm
  Affected
  nvd · opencascade · debian · bookworm; nvd · opencascade · debian · 12
[libocct-modeling-algorithms-7.6]Affected
Source package: [opencascade]
Details (2)
- 7.6.3+dfsg1-7 · amd64 · bookworm
  Affected
  nvd · opencascade · debian · bookworm; nvd · opencascade · debian · 12
- 7.6.3+dfsg1-7 · arm64 · bookworm
  Affected
  nvd · opencascade · debian · bookworm; nvd · opencascade · debian · 12
[libocct-modeling-algorithms-dev]Affected
Source package: [opencascade]
Details (2)
- 7.6.3+dfsg1-7 · amd64 · bookworm
  Affected
  nvd · opencascade · debian · bookworm; nvd · opencascade · debian · 12
- 7.6.3+dfsg1-7 · arm64 · bookworm
  Affected
  nvd · opencascade · debian · bookworm; nvd · opencascade · debian · 12
[libocct-modeling-data-7.6]Affected
Source package: [opencascade]
Details (2)
- 7.6.3+dfsg1-7 · amd64 · bookworm
  Affected
  nvd · opencascade · debian · bookworm; nvd · opencascade · debian · 12
- 7.6.3+dfsg1-7 · arm64 · bookworm
  Affected
  nvd · opencascade · debian · bookworm; nvd · opencascade · debian · 12
[libocct-modeling-data-dev]Affected
Source package: [opencascade]
Details (2)
- 7.6.3+dfsg1-7 · amd64 · bookworm
  Affected
  nvd · opencascade · debian · bookworm; nvd · opencascade · debian · 12
- 7.6.3+dfsg1-7 · arm64 · bookworm
  Affected
  nvd · opencascade · debian · bookworm; nvd · opencascade · debian · 12
[libocct-ocaf-7.6]Affected
Source package: [opencascade]
Details (2)
- 7.6.3+dfsg1-7 · amd64 · bookworm
  Affected
  nvd · opencascade · debian · bookworm; nvd · opencascade · debian · 12
- 7.6.3+dfsg1-7 · arm64 · bookworm
  Affected
  nvd · opencascade · debian · bookworm; nvd · opencascade · debian · 12
[libocct-ocaf-dev]Affected
Source package: [opencascade]
Details (2)
- 7.6.3+dfsg1-7 · amd64 · bookworm
  Affected
  nvd · opencascade · debian · bookworm; nvd · opencascade · debian · 12
- 7.6.3+dfsg1-7 · arm64 · bookworm
  Affected
  nvd · opencascade · debian · bookworm; nvd · opencascade · debian · 12
[libocct-visualization-7.6]Affected
Source package: [opencascade]
Details (2)
- 7.6.3+dfsg1-7 · amd64 · bookworm
  Affected
  nvd · opencascade · debian · bookworm; nvd · opencascade · debian · 12
- 7.6.3+dfsg1-7 · arm64 · bookworm
  Affected
  nvd · opencascade · debian · bookworm; nvd · opencascade · debian · 12
[libocct-visualization-dev]Affected
Source package: [opencascade]
Details (2)
- 7.6.3+dfsg1-7 · amd64 · bookworm
  Affected
  nvd · opencascade · debian · bookworm; nvd · opencascade · debian · 12
- 7.6.3+dfsg1-7 · arm64 · bookworm
  Affected
  nvd · opencascade · debian · bookworm; nvd · opencascade · debian · 12
[occt-draw]Affected
Source package: [opencascade]
Details (2)
- 7.6.3+dfsg1-7 · amd64 · bookworm
  Affected
  nvd · opencascade · debian · bookworm; nvd · opencascade · debian · 12
- 7.6.3+dfsg1-7 · arm64 · bookworm
  Affected
  nvd · opencascade · debian · bookworm; nvd · opencascade · debian · 12
[occt-misc]Affected
Source package: [opencascade]
Details (2)
- 7.6.3+dfsg1-7 · all · bookworm
  Affected
  nvd · opencascade · debian · bookworm; nvd · opencascade · debian · 12
- 7.6.3+dfsg1-7 · all · bookworm
  Affected
  nvd · opencascade · debian · bookworm; nvd · opencascade · debian · 12

[Debian 13 (Trixie)]

[libocct-data-exchange-7.8]Affected
Source package: [opencascade]
Details (2)
- 7.8.1+dfsg1-3 · amd64 · trixie
  Affected
  nvd · opencascade · debian · 13
- 7.8.1+dfsg1-3 · arm64 · trixie
  Affected
  nvd · opencascade · debian · 13
[libocct-data-exchange-dev]Affected
Source package: [opencascade]
Details (2)
- 7.8.1+dfsg1-3 · amd64 · trixie
  Affected
  nvd · opencascade · debian · 13
- 7.8.1+dfsg1-3 · arm64 · trixie
  Affected
  nvd · opencascade · debian · 13
[libocct-doc]Affected
Source package: [opencascade]
Details (2)
- 7.8.1+dfsg1-3 · all · trixie
  Affected
  nvd · opencascade · debian · 13
- 7.8.1+dfsg1-3 · all · trixie
  Affected
  nvd · opencascade · debian · 13

Next results

Observed: Oct 23, 2026, 10:21:45 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database]