CVE-2021-21042 json
Acrobat Reader DC Out-Of-Bounds Read Information Disclosure Vulnerability
published 2021-02-11 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-8434
- cvss
- 6.5
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 14.7%
- EPSS 14.7% chance of exploitation in 30 days, percentile 96%
- public exploits
- 0
- none known
Summary
Acrobat Reader DC versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier) and 2017.011.30188 (and earlier) are affected by an Out-of-bounds Read vulnerability that could lead to arbitrary disclosure of information in the memory stack. An attacker could leverage this vulnerability to bypass mitigations such as ASLR. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Exploit prediction
14.70% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 6.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N |
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:P/I:N/A:N |
Affected products
- Adobe Acrobat Reader
Classification
- Weakness
-
- CWE-125 Out-of-bounds Read
References
-
helpx.adobe.com
/security/products/acrobat/apsb21-09.html
vendor-advisory
Sources
- CVE List CVE-2021-21042
- NVD CVE-2021-21042
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