CVE-2026-42171 (GCVE-0-2026-42171)
Vulnerability from cvelistv5 – Published: 2026-04-24 21:20 – Updated: 2026-04-25 19:33
VLAI?
Summary
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).
Severity ?
7.8 (High)
CWE
- CWE-427 - Uncontrolled Search Path Element
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Nullsoft | Nullsoft Scriptable Install System |
Affected:
3.06.1 , < 3.12
(custom)
|
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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