---
title: "Security digest: April 11, 2023"
url: https://erroneo.us/security/2023-04-11/
description: "April 11, 2023 vulnerability digest: 1 brief (Windows CNG Key Isolation CVE-2023-28229…). What to patch and who can relax."
type: security-digest-day
section: "Security Digest"
date_published: 2023-04-11
date_modified: 2026-10-23
publisher: erroneo.us
author: erroneo.us Security Desk
license: All rights reserved. Quote with attribution and a link.
---

# Security digest: April 11, 2023

1 editorial brief.

## Take stock

- Check exposure: Windows CNG Key Isolation CVE-2023-28229: Exploited EoP . Owners of Windows clients or servers below the April 2023 fixed builds, such as out-of-support servers, Windows-based appliances and never-refreshed images.
- None of it touches your stack? Then there is nothing to do today. That is a result, not a failure to read carefully.

## Editorial briefs

- **Check exposure** [Windows CNG Key Isolation CVE-2023-28229: Exploited EoP](https://erroneo.us/security/briefs/windows-cng-key-isolation-cve-2023-28229-eop/index.md): Fixed in April 2023 and listed as exploited since October 2023, this local bug only matters on Windows hosts that stopped taking updates in early 2023; find those and patch or retire them.

## Known exploited (CISA KEV)

None.

## Critical advisories

None.

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Source page: https://erroneo.us/security/2023-04-11/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt