---
title: "Security digest: August 21, 2025"
url: https://erroneo.us/security/2025-08-21/
description: "August 21, 2025 vulnerability digest: 1 CISA KEV addition (Apple); 2 critical advisories (npm). What to patch and who can relax."
type: security-digest-day
section: "Security Digest"
date_published: 2025-08-21
date_modified: 2025-08-21
publisher: erroneo.us
author: erroneo.us Security Desk
license: All rights reserved. Quote with attribution and a link.
---

# Security digest: August 21, 2025

1 known exploited (cisa kev) addition and 2 critical advisories.

## Take stock

- Do you run any of these? Apple iOS, iPadOS, and macOS. They are being exploited in the wild (CISA KEV). Patch or mitigate if you do; CISA’s federal deadline is 2025-09-11.
- npm: 2 critical advisories ( cipher-base , sha.js ). Check with npm audit (or: npm ls <package>) .
- None of it touches your stack? Then there is nothing to do today. That is a result, not a failure to read carefully.

## Known exploited (CISA KEV)

- [CVE-2025-43300](https://erroneo.us/security/cve/CVE-2025-43300/index.md) Apple iOS, iPadOS, and macOS: Apple iOS, iPadOS, and macOS Out-of-Bounds Write Vulnerability (CISA due 2025-09-11)

## Critical advisories

- [CVE-2025-9287](https://erroneo.us/security/cve/CVE-2025-9287/index.md) cipher-base is missing type checks, leading to hash rewind and passing on crafted data — npm cipher-base <= 1.0.4 → 1.0.5
- [CVE-2025-9288](https://erroneo.us/security/cve/CVE-2025-9288/index.md) sha.js is missing type checks leading to hash rewind and passing on crafted data — npm sha.js <= 2.4.11 → 2.4.12

---
Source page: https://erroneo.us/security/2025-08-21/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt