What is CVE-2020-24439?

CVE-2020-24439 is a low-severity vulnerability in Adobe Acrobat, classified under Improper Verification of Cryptographic Signature. CVSS score: 2.8/10. Published 2020-11-05.

How severe is CVE-2020-24439?

Low severity. CVSS v3 base score is 2.8 out of 10.

Vulnerability in Adobe Acrobat

CVE-2020-24439

Acrobat Reader DC for macOS versions 2020.012.20048 (and earlier), 2020.001.30005 (and earlier) and 2017.011.30175 (and earlier) are affected by a security feature bypass. While the practical security impact is minimal, a defense-in-depth fix has been implemented to further harden the Adobe Reader update process.

Published 2020-11-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 2.8 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.006 (48.5th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 48.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · 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-347 — Improper Verification of Cryptographic Signature

References

helpx.adobe.com/security/products/acrobat/apsb20-67.html (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2020-24439?: CVE-2020-24439 is a low-severity vulnerability in Adobe Acrobat, classified under Improper Verification of Cryptographic Signature. CVSS score: 2.8/10. Published 2020-11-05.
How severe is CVE-2020-24439?: Low severity. CVSS v3 base score is 2.8 out of 10.