Vulnerability Intelligence Report
Adobe Acrobat Reader use after free vulnerability could lead to arbitrary code execution
CVE-2021-28550
Acrobat Reader DC versions versions 2021.001.20150 (and earlier), 2020.001.30020 (and earlier) and 2017.011.30194 (and earlier) are affected by a Use After Free 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.
CISA KEV
SSVC: Active Exploitation
CVSS Base Score
9.6
CRITICAL
Exploitability:2.9
Impact Score:6.1
EPSS Probability:52.01%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-416 ↗Use After Free (CWE-416)
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Adobe | Acrobat Reader | unspecified <= 2020.001.30020 (affected), unspecified <= 2021.001.20150 (affected), unspecified <= 2017.011.30194 (affected), unspecified <= None (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Adobe Systems Incorporated · Vendor · USA |
| Reserved | 2021-03-16T00:00:00 |
| Published | 2021-09-02T16:07:20 |
| Patch Date | 2021-05-11 |
| Last Updated | 2025-10-21T23:25:35 |
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