New Windows 'MiniPlasma' zero-day exploit gives SYSTEM access, PoC released
A new zero-day exploit for Windows, named 'MiniPlasma', has been released, allowing attackers to gain SYSTEM privileges on fully patched systems. The exploit was published by a researcher who claims that Microsoft failed to adequately address a previously reported vulnerability. This incident is part of a series of recent disclosures by the same researcher, who is protesting Microsoft's handling of security vulnerabilities.
- ▪The 'MiniPlasma' exploit allows privilege escalation on Windows systems.
- ▪The flaw affects the 'cldflt.sys' Cloud Filter driver and was previously reported in 2020.
- ▪The researcher claims that Microsoft has not properly patched the vulnerability despite previous assurances.
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| Original publisher | BleepingComputer |
| Canonical URL | https://www.bleepingcomputer.com/news/microsoft/new-windows-miniplasma-zero-day-exploit-gives-system-access-poc-released/ |
| Publication time | Mon, 18 May 2026 18:56:09 +0000 |
| Retrieval time | 2026-05-18T19:04:56.969Z |
| Last seen | 2026-05-18T19:04:56.969Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | z5Zj3M1xhDPW · 4 stories |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
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| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
New Windows 'MiniPlasma' zero-day exploit gives SYSTEM access, PoC released By Lawrence Abrams May 17, 2026 06:30 PM 4 A cybersecurity researcher has released a proof-of-concept exploit for a Windows privilege escalation zero-day dubbed "MiniPlasma" that lets attackers gain SYSTEM privileges on fully patched Windows systems. The exploit was published by a researcher known as Chaotic Eclipse, or Nightmare Eclipse, who released both the source code and a compiled executable on GitHub after claiming that Microsoft failed to properly patch a previously reported 2020 vulnerability.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at BleepingComputer.
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