Duplicati CVE-2026-76159

Let me synthesize this.

CVE-2026-76159: Duplicati for Windows before v2.4.0.0, incorrect permission assignment (CWE-732) in configuration loader, allows local low-priv attacker to escalate to SYSTEM via attacker-controlled preload.json.

Product name: Duplicati.

Tags include "Microsoft" which is likely a mislabeled tag — Duplicati is an independent open-source project (duplicati.com), not Microsoft. Though it runs on Windows... The tag "Microsoft" as vendor is wrong. Emit mislabeled_tag with target "Microsoft". Confidence high? Duplicati is an independent open-source backup tool, not Microsoft. Yes, high confidence.

Missing tags? Maybe "windows" — since it's Windows-specific. Hmm, missing_tag target "Windows", suggested "windows". That's unambiguously implied ("Duplicati for Windows", MSI installers). Could emit. But careful — is "windows" a valid tag slug in their taxonomy? They said emit only when unambiguously implied. I'll include it with high confidence... Actually risk: their taxonomy may be "Microsoft Windows". Hmm. I'll include it maybe. Let's be a bit conservative but it seems clearly applicable. I'll include "windows" for missing_tag. Hmm, but if the slug doesn't exist it might attach a bad tag. The instructions say suggested is "lowercase hyphenated slug (e.g. target "WordPress", suggested "wordpress")". So "windows" is fine.

Also "privilege-escalation" technique tag is already present as "Privilege Escalation". Fine.

CVSS given is 4.0 base with E:X etc. Score 7.0. PR:L, AV:L, UI:P. Hmm, why UI:P? Probably because attacker needs to force the app to load the config... The preload.json is attacker-controlled — likely attacker with write access to a directory that gets loaded. Local low-priv attacker writes preload.json, then triggers service restart (UI:P passive — waiting for service restart/admin action). Anyway.

My assessed CVSS 3.1: AV:L/AC:L/PR:L/UI:P? Hmm, UI:P isn't valid in 3.1. UI options: N, R. If user interaction required (someone must rest