What is CVE-2021-21060?

CVE-2021-21060 is a medium-severity vulnerability in Adobe Acrobat, classified under Improper Input Validation. CVSS score: 4.6/10. Published 2021-02-11.

How severe is CVE-2021-21060?

Medium severity. CVSS v3 base score is 4.6 out of 10.

Improper input validation in Adobe Acrobat

CVE-2021-21060

Adobe Acrobat Pro DC versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier) and 2017.011.30188 (and earlier) are affected by an improper input validation vulnerability. An unauthenticated attacker could leverage this vulnerability to disclose sensitive information in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2021-02-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.6 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:L.

EPSS exploit prediction

EPSS: 0.016 (75.2th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 75.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000

Affected products

Adobe Acrobat
Adobe Acrobat Dc
Adobe Acrobat Reader — versions unspecified
Adobe Acrobat Reader
Adobe Acrobat Reader Dc
Apple macOS
Microsoft Windows

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

helpx.adobe.com/security/products/acrobat/apsb21-09.html (Vendor Advisory)

Frequently asked questions

What is CVE-2021-21060?: CVE-2021-21060 is a medium-severity vulnerability in Adobe Acrobat, classified under Improper Input Validation. CVSS score: 4.6/10. Published 2021-02-11.
How severe is CVE-2021-21060?: Medium severity. CVSS v3 base score is 4.6 out of 10.