CVE-2021-28637 json
Adobe Acrobat Pro DC PDFLibTool Out-of-Bounds Read Remote Code Execution Vulnerability
published 2021-08-20 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-15306
- cvss
- 7.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.9%
- EPSS 2.9% chance of exploitation in 30 days, percentile 86%
- public exploits
- 0
- none known
Summary
Acrobat Reader DC versions 2021.005.20054 (and earlier), 2020.004.30005 (and earlier) and 2017.011.30197 (and earlier) are affected by an out-of-bounds read vulnerability. An unauthenticated attacker could leverage this vulnerability achieve arbitrary read / write system information 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
2.85% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 7.1 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N |
| NVD | 2.0 | 8.8 | AV:N/AC:M/Au:N/C:C/I:C/A:N |
Affected products
- Adobe Acrobat Reader
Classification
- Weakness
-
- CWE-125 Out-of-bounds Read
References
-
helpx.adobe.com
/security/products/acrobat/apsb21-51.html
release-notes, vendor-advisory
Sources
- CVE List CVE-2021-28637
- NVD CVE-2021-28637
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.