DEBIAN-CVE-2026-42476
Two heap-based out-of-bounds read vulnerabilities in the STL ASCII file parser in Open CASCADE Technology (OCCT) V8_0_0_rc5 exist in RWStl_Reader::ReadAscii because buffers returned by Standard_ReadLineBuffer::ReadLine() are not properly length-validated before strncasecmp or direct byte access. User-assisted attackers can trigger these issues by persuading a victim to open a crafted STL file with extremely short lines, resulting in a denial of service or possible information disclosure.
DEBIAN-CVE-2026-42476
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-42476
opencascade
Source reference: /affected/0/package/name
- Affected versions
- 7.6.3+dfsg1-7
Source reference:
/affected/0/versions7.6.3+dfsg1-7.1Source reference:
/affected/0/versions7.7.1+dfsg1-1~exp1Source reference:
/affected/0/versions7.7.1+dfsg1-1~exp2Source reference:
/affected/0/versions7.8.1+dfsg1-1Source reference:
/affected/0/versions7.8.1+dfsg1-1~exp1Source reference:
/affected/0/versions7.8.1+dfsg1-2Source reference:
/affected/0/versions7.8.1+dfsg1-3Source reference:
/affected/0/versions7.8.1+dfsg1-4~exp1Source reference:
/affected/0/versions7.8.1+dfsg1-5Source reference:
/affected/0/versions7.8.1+dfsg1-6Source reference:
/affected/0/versions7.8.1+dfsg1-7Source reference:
/affected/0/versions7.9.1+dfsg-1~exp1Source reference:
/affected/0/versions7.9.1+dfsg-1~exp2Source reference:
/affected/0/versions7.9.2+dfsg-1Source reference:
/affected/0/versions7.9.2+dfsg-2Source reference:
/affected/0/versions7.9.2+dfsg-3Source reference:
/affected/0/versions7.9.2+dfsg-4Source reference:
/affected/0/versions7.9.2+dfsg-5Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
opencascade
Source reference: /affected/1/package/name
- Affected versions
- 7.8.1+dfsg1-3
Source reference:
/affected/1/versions7.8.1+dfsg1-4~exp1Source reference:
/affected/1/versions7.8.1+dfsg1-5Source reference:
/affected/1/versions7.8.1+dfsg1-6Source reference:
/affected/1/versions7.8.1+dfsg1-7Source reference:
/affected/1/versions7.9.1+dfsg-1~exp1Source reference:
/affected/1/versions7.9.1+dfsg-1~exp2Source reference:
/affected/1/versions7.9.2+dfsg-1Source reference:
/affected/1/versions7.9.2+dfsg-2Source reference:
/affected/1/versions7.9.2+dfsg-3Source reference:
/affected/1/versions7.9.2+dfsg-4Source reference:
/affected/1/versions7.9.2+dfsg-5Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
opencascade
Source reference: /affected/2/package/name
- Affected versions
- 7.8.1+dfsg1-3
Source reference:
/affected/2/versions7.8.1+dfsg1-4~exp1Source reference:
/affected/2/versions7.8.1+dfsg1-5Source reference:
/affected/2/versions7.8.1+dfsg1-6Source reference:
/affected/2/versions7.8.1+dfsg1-7Source reference:
/affected/2/versions7.9.1+dfsg-1~exp1Source reference:
/affected/2/versions7.9.1+dfsg-1~exp2Source reference:
/affected/2/versions7.9.2+dfsg-1Source reference:
/affected/2/versions7.9.2+dfsg-2Source reference:
/affected/2/versions7.9.2+dfsg-3Source reference:
/affected/2/versions7.9.2+dfsg-4Source reference:
/affected/2/versions7.9.2+dfsg-5Source reference:
/affected/2/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "opencascade",
"purl": "pkg:deb/debian/opencascade?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"7.6.3+dfsg1-7",
"7.6.3+dfsg1-7.1",
"7.7.1+dfsg1-1~exp1",
"7.7.1+dfsg1-1~exp2",
"7.8.1+dfsg1-1",
"7.8.1+dfsg1-1~exp1",
"7.8.1+dfsg1-2",
"7.8.1+dfsg1-3",
"7.8.1+dfsg1-4~exp1",
"7.8.1+dfsg1-5",
"7.8.1+dfsg1-6",
"7.8.1+dfsg1-7",
"7.9.1+dfsg-1~exp1",
"7.9.1+dfsg-1~exp2",
"7.9.2+dfsg-1",
"7.9.2+dfsg-2",
"7.9.2+dfsg-3",
"7.9.2+dfsg-4",
"7.9.2+dfsg-5"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42476.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "opencascade",
"purl": "pkg:deb/debian/opencascade?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"7.8.1+dfsg1-3",
"7.8.1+dfsg1-4~exp1",
"7.8.1+dfsg1-5",
"7.8.1+dfsg1-6",
"7.8.1+dfsg1-7",
"7.9.1+dfsg-1~exp1",
"7.9.1+dfsg-1~exp2",
"7.9.2+dfsg-1",
"7.9.2+dfsg-2",
"7.9.2+dfsg-3",
"7.9.2+dfsg-4",
"7.9.2+dfsg-5"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42476.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "opencascade",
"purl": "pkg:deb/debian/opencascade?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"7.8.1+dfsg1-3",
"7.8.1+dfsg1-4~exp1",
"7.8.1+dfsg1-5",
"7.8.1+dfsg1-6",
"7.8.1+dfsg1-7",
"7.9.1+dfsg-1~exp1",
"7.9.1+dfsg-1~exp2",
"7.9.2+dfsg-1",
"7.9.2+dfsg-2",
"7.9.2+dfsg-3",
"7.9.2+dfsg-4",
"7.9.2+dfsg-5"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42476.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #56497 · Revision 1
- Added to Heist Feed
- Publisher date