DEBIAN-CVE-2026-42171

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Source
https://security-tracker.debian.org/tracker/CVE-2026-42171
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42171.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-42171
Upstream
Published
2026-04-24T22:16:01Z
Modified
2026-09-14T17:03:12Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

NSIS (Nullsoft Scriptable Install System) 3.06.1 before 3.12 sometimes uses the Low IL temp directory when executing as SYSTEM, allowing local attackers to gain privileges (if they can cause my_GetTempFileName to return 0, as shown in the references).

References

Affected packages

Debian:12 / nsis

Package

Name
nsis
Purl
pkg:deb/debian/nsis?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.08-3
3.08-3+deb12u1
3.09-1
3.09-2
3.09-3
3.09-4
3.10-1
3.10-2
3.11-1
3.12-1

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42171.json"

Debian:13 / nsis

Package

Name
nsis
Purl
pkg:deb/debian/nsis?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.11-1
3.12-1

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42171.json"

Debian:14 / nsis

Package

Name
nsis
Purl
pkg:deb/debian/nsis?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
3.12-1

Affected versions

3.*
3.11-1

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42171.json"