8.8
CVE-2021-21017
- EPSS 89.72%
- Published 11.02.2021 20:15:13
- Last modified 13.02.2025 17:30:38
- Source psirt@adobe.com
- Teams watchlist Login
- Open Login
Acrobat Reader DC versions versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier) and 2017.011.30188 (and earlier) are affected by a heap-based buffer overflow vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve 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.
Data is provided by the National Vulnerability Database (NVD)
Adobe ≫ Acrobat Dc SwEditioncontinuous Version <= 20.013.20074
Adobe ≫ Acrobat Reader SwEditionclassic Version >= 17.0 <= 17.011.30188
Adobe ≫ Acrobat Reader SwEditionclassic Version >= 20.0 <= 20.001.300183
03.11.2021: CISA Known Exploited Vulnerabilities (KEV) Catalog
Adobe Acrobat and Reader Heap-based Buffer Overflow Vulnerability
VulnerabilityAcrobat Acrobat and Reader contain a heap-based buffer overflow vulnerability that could allow an unauthenticated attacker to achieve code execution in the context of the current user.
DescriptionApply updates per vendor instructions.
Required actions| Type | Source | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 89.72% | 0.995 |
| Source | Base Score | Exploit Score | Impact Score | Vector string |
|---|---|---|---|---|
| nvd@nist.gov | 6.8 | 8.6 | 6.4 |
AV:N/AC:M/Au:N/C:P/I:P/A:P
|
| psirt@adobe.com | 8.8 | 2.8 | 5.9 |
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
|
CWE-122 Heap-based Buffer Overflow
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
CWE-787 Out-of-bounds Write
The product writes data past the end, or before the beginning, of the intended buffer.