CVE-2021-39836 in the critical feed json
Adobe Acrobat Reader DC AcroForm buttonGetIcon Use-After-Free Remote Code Execution Vulnerability
published 2021-09-29 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-26193
- cvss
- 7.8
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 69.5%
- EPSS 69.5% chance of exploitation in 30 days, percentile 99.3%
- public exploits
- 0
- none known
Summary
Acrobat Reader DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by a use-after-free vulnerability in the processing of the AcroForm buttonGetIcon action that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Exploit prediction
69.54% chance of exploitation in the next 30 days, higher than 99.3% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 7.8 | CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
Affected products
- Adobe Acrobat Reader
Classification
- Weakness
-
- CWE-416 Use After Free
References
-
helpx.adobe.com
/security/products/acrobat/apsb21-55.html
release-notes, vendor-advisory
Sources
- CVE List CVE-2021-39836
- NVD CVE-2021-39836
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.