VulnSocial

CVE-2026-42171Disclosure(nullsoft / nullsoft_scriptable_install_system)

LOWCVSS 7.8 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

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).

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0.0/ 10 priority

Sources & remediation

Patch / fix
Other references
Weakness type (CWE)
CWE-427

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • nullsoft_scriptable_install_system

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • 1 total mentions across 1 day

Affected systems

Vendors
nullsoft
Products
nullsoft_scriptable_install_system

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-04-24: 1Technical Details · 2026-04-24: 104-24
Signal classification1 categories
Disclosure
1100.0%
Referenced assets1 URL
By indicator
Full discourse1 post
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-42171 Local Privilege Escalation in NSIS 3.06.1 Before 3.12 via Temp Directory https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-42171

    Post summary

    CVE-2026-42171 is a local privilege escalation vulnerability in NSIS versions 3.06.1 to 3.12 that can be triggered via a temporary directory; no PoC, exploit, or patch information is provided.

    0000066
    4.0K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appnullsoftnullsoft_scriptable_install_system---

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