DEBIAN-CVE-2026-65609
nnn is vulnerable to Out-of-Bound write vulnerability. Due to lack of validation of attacker-controlled length fields deserialized from a session file, a crafted session file can cause nnn to write data beyond the bounds of fixed-size global buffers when loaded with the -s option. An attacker who can place a malicious session file in the victim's nnn session directory can exploit this to corrupt adjacent global state. Maintainer of this project was notified about this vulnerability. It might has been addressed, but the maintainer did not provide a vulnerable version range. Only version 5.2 was tested and confirmed as vulnerable.
DEBIAN-CVE-2026-65609
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-2026-65609
nnn
Source reference: /affected/0/package/name
- Affected versions
- 4.7-1
Source reference:
/affected/0/versions4.8-1Source reference:
/affected/0/versions4.9-1Source reference:
/affected/0/versions5.0-1Source reference:
/affected/0/versions5.1-1Source reference:
/affected/0/versions5.2-1Source reference:
/affected/0/versions5.3-1Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
nnn
Source reference: /affected/1/package/name
- Affected versions
- 5.0-1
Source reference:
/affected/1/versions5.1-1Source reference:
/affected/1/versions5.2-1Source reference:
/affected/1/versions5.3-1Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
nnn
Source reference: /affected/2/package/name
- Affected versions
- 5.0-1
Source reference:
/affected/2/versions5.1-1Source reference:
/affected/2/versions5.2-1Source reference:
/affected/2/versions5.3-1Source 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": "nnn",
"purl": "pkg:deb/debian/nnn?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"4.7-1",
"4.8-1",
"4.9-1",
"5.0-1",
"5.1-1",
"5.2-1",
"5.3-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-65609.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "nnn",
"purl": "pkg:deb/debian/nnn?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"5.0-1",
"5.1-1",
"5.2-1",
"5.3-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-65609.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "nnn",
"purl": "pkg:deb/debian/nnn?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"5.0-1",
"5.1-1",
"5.2-1",
"5.3-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-65609.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #58154 · Revision 1
- Added to Heist Feed
- Publisher date