Every CVE Search/ Get API key

CVE-2026-42477

A heap-based out-of-bounds read vulnerability in RWObj_Reader::read in the OBJ file parser in...

7.1 High

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.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
High
Integrity
None
Availability
High

Exploit likelihood

0.10%Up 0.1 points since May 2, 2026
90%50%10%1%

What each source reports

NVD Score used 7.1

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.

Record
CVE-2026-42477
CVSS 3.1
7.1 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-125, CWE-122
Updated
2026-11-02
CVE List 5.5

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.

Record
CVE-2026-42477
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-122
Updated
2026-11-02
EUVDEUVD-2026-26600 5.5

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.

Record
EUVD-2026-26600
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
GitHub AdvisoriesGHSA-3vcm-9wgv-947g 7.1

A heap-based out-of-bounds read vulnerability in RWObj_Reader::read in the OBJ file parser in...

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.

Record
GHSA-3vcm-9wgv-947g
CVSS 3.1
7.1 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Weakness
CWE-122, CWE-125
Updated
2026-11-02
OSV 5.5

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.

Record
CVE-2026-42477
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2026-42477 7.1

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.

Record
DEBIAN-CVE-2026-42477
CVSS 3.1
7.1 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2026-42477 7.1

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.

Record
UBUNTU-CVE-2026-42477
CVSS 3.1
7.1 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
opencascade
Debian:12
All versions, plus listed versions
7.6.3+dfsg1-77.6.3+dfsg1-7.17.7.1+dfsg1-1~exp17.7.1+dfsg1-1~exp27.8.1+dfsg1-1
Show 14 moreShow less
7.8.1+dfsg1-1~exp17.8.1+dfsg1-27.8.1+dfsg1-37.8.1+dfsg1-4~exp17.8.1+dfsg1-57.8.1+dfsg1-67.8.1+dfsg1-77.9.1+dfsg-1~exp17.9.1+dfsg-1~exp27.9.2+dfsg-17.9.2+dfsg-27.9.2+dfsg-37.9.2+dfsg-47.9.2+dfsg-5
None known
opencascade
Debian:13
All versions, plus listed versions
7.8.1+dfsg1-37.8.1+dfsg1-4~exp17.8.1+dfsg1-57.8.1+dfsg1-67.8.1+dfsg1-7
Show 7 moreShow less
7.9.1+dfsg-1~exp17.9.1+dfsg-1~exp27.9.2+dfsg-17.9.2+dfsg-27.9.2+dfsg-37.9.2+dfsg-47.9.2+dfsg-5
None known
opencascade
Debian:14
All versions, plus listed versions
7.8.1+dfsg1-37.8.1+dfsg1-4~exp17.8.1+dfsg1-57.8.1+dfsg1-67.8.1+dfsg1-7
Show 7 moreShow less
7.9.1+dfsg-1~exp17.9.1+dfsg-1~exp27.9.2+dfsg-17.9.2+dfsg-27.9.2+dfsg-37.9.2+dfsg-47.9.2+dfsg-5
None known
opencascade
Ubuntu:20.04:LTS
All versions, plus listed versions
7.3.3+dfsg1-17.3.3+dfsg1-1build1
None known
opencascade
Ubuntu:22.04:LTS
All versions, plus listed versions
7.5.1+dfsg1-27.5.1+dfsg1-2ubuntu1
None known
opencascade
Ubuntu:24.04:LTS
All versions, plus listed versions
7.6.3+dfsg1-77.6.3+dfsg1-7.17.6.3+dfsg1-7.1build1
None known
opencascade
Ubuntu:25.10
All versions, plus listed versions
7.8.1+dfsg1-3
None known
opencascade
Ubuntu:26.10
All versions, plus listed versions
7.9.2+dfsg-47.9.2+dfsg-4build1
None known
opencascade
Ubuntu:26.04:LTS
All versions, plus listed versions
7.8.1+dfsg1-37.9.2+dfsg-27.9.2+dfsg-37.9.2+dfsg-4
None known

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-42477 is a high vulnerability (CVSS 7.1) in Opencascade Open Cascade Technology, published May 1, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.10%, the 1st percentile. No source names a fixed version.

References

MoveEnter Open