CVE-2015-9268: Nullsoft Scriptable Install System (NSIS) before 2.49 has unsafe implicit linking against Version.dll.

Security readout for executives and security teams

NSIS versions before 2.49 had unsafe handling of Version.dll. For organizations, the main concern is legacy installer tooling or old NSIS-built installers that may behave unsafely when run in risky file locations. The source bundle does not provide CVSS, confirmed exploit activity, or detailed affected platform scope. Exposure is most likely on build systems, packaging pipelines, or legacy distribution processes that still use NSIS before 2.49. Organizations may also need to review old internally hosted installers, especially where execution context and local file placement are not controlled. Treat this as a legacy exposure cleanup item, not an emergency based on available evidence. Prioritize environments that still build or distribute Windows installers with old NSIS versions, because stale installer tooling can persist unnoticed in release pipelines. Mitigation focus: Upgrade NSIS to version 2.49 or later where used.; Apply distribution security updates, including Debian guidance where relevant.; Inventory legacy NSIS-built installers before continued internal distribution..

Prepared

Jun 7, 2026, 05:16 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.