---
title: "Security digests, September 2026"
url: https://erroneo.us/security/archive/2026-09/
description: "Every daily security digest from September 2026: 23 editorial briefs, 43 known exploited (CISA KEV) additions and 84 critical advisories, day by day, with…"
type: security-archive-month
section: "Security Digest"
date_modified: 2026-09-30
publisher: erroneo.us
author: erroneo.us Security Desk
license: All rights reserved. Quote with attribution and a link.
---

# Security digests, September 2026

- [September 30, 2026](https://erroneo.us/security/2026-09-30/index.md): 2 editorial briefs, 1 known exploited (CISA KEV) addition and 1 critical advisory
- [September 29, 2026](https://erroneo.us/security/2026-09-29/index.md): 1 known exploited (CISA KEV) addition and 2 critical advisories
- [September 28, 2026](https://erroneo.us/security/2026-09-28/index.md): 1 editorial brief
- [September 27, 2026](https://erroneo.us/security/2026-09-27/index.md): 1 editorial brief and 2 known exploited (CISA KEV) additions
- [September 25, 2026](https://erroneo.us/security/2026-09-25/index.md): 3 known exploited (CISA KEV) additions and 1 critical advisory
- [September 24, 2026](https://erroneo.us/security/2026-09-24/index.md): 1 editorial brief, 2 known exploited (CISA KEV) additions and 5 critical advisories
- [September 23, 2026](https://erroneo.us/security/2026-09-23/index.md): 3 critical advisories
- [September 22, 2026](https://erroneo.us/security/2026-09-22/index.md): 3 editorial briefs, 4 known exploited (CISA KEV) additions and 4 critical advisories
- [September 21, 2026](https://erroneo.us/security/2026-09-21/index.md): 1 known exploited (CISA KEV) addition
- [September 18, 2026](https://erroneo.us/security/2026-09-18/index.md): 1 editorial brief, 3 known exploited (CISA KEV) additions and 5 critical advisories
- [September 17, 2026](https://erroneo.us/security/2026-09-17/index.md): 1 editorial brief and 9 critical advisories
- [September 16, 2026](https://erroneo.us/security/2026-09-16/index.md): 1 editorial brief, 3 known exploited (CISA KEV) additions and 3 critical advisories
- [September 15, 2026](https://erroneo.us/security/2026-09-15/index.md): 2 editorial briefs and 3 critical advisories
- [September 14, 2026](https://erroneo.us/security/2026-09-14/index.md): 1 editorial brief, 1 known exploited (CISA KEV) addition and 1 critical advisory
- [September 11, 2026](https://erroneo.us/security/2026-09-11/index.md): 4 known exploited (CISA KEV) additions and 4 critical advisories
- [September 10, 2026](https://erroneo.us/security/2026-09-10/index.md): 1 editorial brief, 2 known exploited (CISA KEV) additions and 4 critical advisories
- [September 9, 2026](https://erroneo.us/security/2026-09-09/index.md): 1 editorial brief, 4 known exploited (CISA KEV) additions and 1 critical advisory
- [September 8, 2026](https://erroneo.us/security/2026-09-08/index.md): 1 editorial brief, 4 known exploited (CISA KEV) additions and 14 critical advisories
- [September 7, 2026](https://erroneo.us/security/2026-09-07/index.md): 1 editorial brief and 1 critical advisory
- [September 4, 2026](https://erroneo.us/security/2026-09-04/index.md): 1 known exploited (CISA KEV) addition and 2 critical advisories
- [September 3, 2026](https://erroneo.us/security/2026-09-03/index.md): 3 editorial briefs and 14 critical advisories
- [September 2, 2026](https://erroneo.us/security/2026-09-02/index.md): 1 editorial brief, 7 known exploited (CISA KEV) additions and 6 critical advisories
- [September 1, 2026](https://erroneo.us/security/2026-09-01/index.md): 1 editorial brief and 1 critical advisory

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Source page: https://erroneo.us/security/archive/2026-09/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt