CVE-2021-21042
Acrobat Reader DC Out-Of-Bounds Read Information Disclosure Vulnerability
- Published
- Feb 11, 2021
- Updated
- Sep 16, 2024
- Assigning CNA
- adobe
- Evidence observed
- Aug 4, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:NModerate · next 30 days
- Percentile
- 96.6%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
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.
Sources
2- CVE-2021-21042Exploit
Exploit code for CVE-2021-21042
Proof-of-concept exploit for CVE-2021-21042, an information disclosure vulnerability in Adobe Reader triggered via crafted PDF ID tags.
Responsible use
Use vulnerability information only on systems you own or are authorized to test. Kitploit links to public research metadata and does not store exploit code or malicious payloads.