CVE-2020-24439 json
Acrobat Reader DC for macOS Signature Validation Bypass
published 2020-11-05 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-17159
- cvss
- 2.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 50%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
Exploit prediction
0.64% chance of exploitation in the next 30 days, higher than 50% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 2.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N |
| NVD | 3.1 | 2.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N |
| NVD | 2.0 | 1.2 | AV:L/AC:H/Au:N/C:N/I:P/A:N |
Affected products
- Adobe Acrobat Reader
Classification
- Weakness
-
- CWE-347 Improper Verification of Cryptographic Signature
References
-
helpx.adobe.com
/security/products/acrobat/apsb20-67.html
patch, vendor-advisory
Sources
- CVE List CVE-2020-24439
- NVD CVE-2020-24439
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.