# CVE-2021-21100

## Summary

- **CVE ID:** CVE-2021-21100
- **Severity:** HIGH
- **CVSS Score:** 7.8 (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
- **CWE:** CWE-379
- **Published:** Apr 15, 2021
- **Last Modified:** Mar 13, 2026

## Description

Adobe Digital Editions version 4.5.11.187245 (and earlier) is affected by a Privilege Escalation vulnerability during installation. An unauthenticated attacker could leverage this vulnerability to achieve arbitrary file system write in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

## Affected Products

- Adobe — Digital Editions (unspecified)

## References

- [CNA](https://helpx.adobe.com/security/products/Digital-Editions/apsb21-26.html)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 1.02%
- **EPSS Percentile:** 76.9

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._