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CVE-2021-21017
CWE-122
Critical
97.7
RPSRPS range: 0–105; KEV-listed vulnerabilities can receive an exploitation amplifier.
Description
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.
Source: NVD
Signals
- CVSS
- 8.8
- High · v3.1
- EPSS
- 86.32%
- Probability of exploitation in the next 30 days (FIRST)
- CISA KEV
- In CISA KEV since Nov 2021
- Fix commit
- No known fix commit
- Sources: MoreFixes, FreshFixes
- Weakness
- CWE-122
- CWE-122, CWE-787
- Published
- 11 Feb 2021
- Last modified 23 Oct 2025
How to read these signals: RPS · EPSS · CISA KEV · Data sources
Get this score from the API
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Data as of 7 Oct 2026, 05:16 UK time