Live › vulnerability › CVE-2021-21017
Go to dashboardAdobe Acrobat and Reader have a heap-based buffer overflow that lets an attacker run code as the current user. CISA lists it as actively exploited in the wild.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:11 UTC, 3h before NVD. All times on this page are UTC.
Apply updates per vendor instructions.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| Adobe Acrobat and Reader | vendor | – | – |
Open Acrobat or Reader and check Help > About to see the installed version, then compare it with the vendor's fixed release.
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
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.
This page as .md · .json · in your agent: get_signal("CVE-2021-21017")
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