DEBIAN-CVE-2026-40254
FreeRDP is a free implementation of the Remote Desktop Protocol. Versions prior to 3.25.0 have an off-by-one in the path traversal filter in `channels/drive/client/drive_file.c`. The `contains_dotdot()` function catches `../` and `..\` mid-path but misses `..` when it's the last component with no trailing separator. A rogue RDP server can read, list, or write files one directory above the client's shared folder through RDPDR requests. This requires the victim to connect with drive redirection enabled. Version 3.25.0 patches the issue.
DEBIAN-CVE-2026-40254
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-2026-40254
freerdp2
Source reference: /affected/0/package/name
- Affected versions
- 2.10.0+dfsg1-1
Source reference:
/affected/0/versions2.10.0+dfsg1-1.1Source reference:
/affected/0/versions2.11.2+dfsg1-1Source reference:
/affected/0/versions2.11.2+dfsg1-1.1~exp1Source reference:
/affected/0/versions2.11.2+dfsg1-1.1~exp2Source reference:
/affected/0/versions2.11.5+dfsg1-1Source reference:
/affected/0/versions2.11.7+dfsg1-1Source reference:
/affected/0/versions2.11.7+dfsg1-2Source reference:
/affected/0/versions2.11.7+dfsg1-3Source reference:
/affected/0/versions2.11.7+dfsg1-4Source reference:
/affected/0/versions2.11.7+dfsg1-5Source reference:
/affected/0/versions2.11.7+dfsg1-6Source reference:
/affected/0/versions2.11.7+dfsg1-6~deb12u1Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
freerdp3
Source reference: /affected/1/package/name
- Affected versions
- 3.15.0+dfsg-2.1
Source reference:
/affected/1/versions3.15.0+dfsg-2.1+deb13u1Source reference:
/affected/1/versions3.15.0+dfsg-2.1+deb13u2Source reference:
/affected/1/versions - Fixed versions
- 3.15.0+dfsg-2.1+deb13u3
Source reference:
/affected/1/ranges - Prerequisites
- Not stated in this record
freerdp3
Source reference: /affected/2/package/name
- Affected versions
- 3.15.0+dfsg-2.1
Source reference:
/affected/2/versions3.16.0+dfsg-1Source reference:
/affected/2/versions3.16.0+dfsg-2Source reference:
/affected/2/versions3.17.0+dfsg-1Source reference:
/affected/2/versions3.17.1+dfsg-1Source reference:
/affected/2/versions3.17.1+dfsg-2Source reference:
/affected/2/versions3.17.2+dfsg-1Source reference:
/affected/2/versions3.17.2+dfsg-2Source reference:
/affected/2/versions3.17.2+dfsg-3Source reference:
/affected/2/versions3.18.0+dfsg-1Source reference:
/affected/2/versions3.19.0+dfsg-1Source reference:
/affected/2/versions3.19.1+dfsg-1Source reference:
/affected/2/versions3.20.0+dfsg-1Source reference:
/affected/2/versions3.20.2+dfsg-1Source reference:
/affected/2/versions3.21.0+dfsg-1Source reference:
/affected/2/versions3.22.0+dfsg-1Source reference:
/affected/2/versions3.22.0+dfsg-1~bpo13+0Source reference:
/affected/2/versions3.22.0+dfsg-1~bpo13+1Source reference:
/affected/2/versions3.22.0+dfsg-3Source reference:
/affected/2/versions3.23.0+dfsg-1Source reference:
/affected/2/versions3.23.0+dfsg-1~bpo13+1Source reference:
/affected/2/versions3.24.0+dfsg-1Source reference:
/affected/2/versions3.24.0+dfsg-2Source reference:
/affected/2/versions3.24.1+dfsg-1Source reference:
/affected/2/versions3.24.2+dfsg-1Source reference:
/affected/2/versions3.24.2+dfsg-1~bpo13+1Source reference:
/affected/2/versions - Fixed versions
- 3.25.0+dfsg-1
Source reference:
/affected/2/ranges - 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": "freerdp2",
"purl": "pkg:deb/debian/freerdp2?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"2.10.0+dfsg1-1",
"2.10.0+dfsg1-1.1",
"2.11.2+dfsg1-1",
"2.11.2+dfsg1-1.1~exp1",
"2.11.2+dfsg1-1.1~exp2",
"2.11.5+dfsg1-1",
"2.11.7+dfsg1-1",
"2.11.7+dfsg1-2",
"2.11.7+dfsg1-3",
"2.11.7+dfsg1-4",
"2.11.7+dfsg1-5",
"2.11.7+dfsg1-6",
"2.11.7+dfsg1-6~deb12u1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-40254.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.15.0+dfsg-2.1+deb13u3"
}
]
}
],
"package": {
"name": "freerdp3",
"purl": "pkg:deb/debian/freerdp3?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"3.15.0+dfsg-2.1",
"3.15.0+dfsg-2.1+deb13u1",
"3.15.0+dfsg-2.1+deb13u2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-40254.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.25.0+dfsg-1"
}
]
}
],
"package": {
"name": "freerdp3",
"purl": "pkg:deb/debian/freerdp3?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"3.15.0+dfsg-2.1",
"3.16.0+dfsg-1",
"3.16.0+dfsg-2",
"3.17.0+dfsg-1",
"3.17.1+dfsg-1",
"3.17.1+dfsg-2",
"3.17.2+dfsg-1",
"3.17.2+dfsg-2",
"3.17.2+dfsg-3",
"3.18.0+dfsg-1",
"3.19.0+dfsg-1",
"3.19.1+dfsg-1",
"3.20.0+dfsg-1",
"3.20.2+dfsg-1",
"3.21.0+dfsg-1",
"3.22.0+dfsg-1",
"3.22.0+dfsg-1~bpo13+0",
"3.22.0+dfsg-1~bpo13+1",
"3.22.0+dfsg-3",
"3.23.0+dfsg-1",
"3.23.0+dfsg-1~bpo13+1",
"3.24.0+dfsg-1",
"3.24.0+dfsg-2",
"3.24.1+dfsg-1",
"3.24.2+dfsg-1",
"3.24.2+dfsg-1~bpo13+1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-40254.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #56884 · Revision 1
- Added to Heist Feed
- Publisher date