CVE-2021-28634
Last modified
CVE-2021-28634 is a high-severity vulnerability rated 8.2/10 on the CVSS scale. Acrobat Reader DC versions 2021.005.20054 (and earlier), 2020.004.30005 (and earlier) and 2017.011.30197 (and earlier) are affected by an Improper Neutralization of Special Elements used in an OS Command. An authenticated attacker could leverage this vulnerability to achieve arbitrary code execution on the host machine in the context of the current user. EPSS estimates a 2.21% chance of exploitation in the next 30 days.
Description
Acrobat Reader DC versions 2021.005.20054 (and earlier), 2020.004.30005 (and earlier) and 2017.011.30197 (and earlier) are affected by an Improper Neutralization of Special Elements used in an OS Command. An authenticated attacker could leverage this vulnerability to achieve arbitrary code execution on the host machine in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Adobe | Acrobat Dc | >= 15.008.20082, <= 21.005.20054 |
| Adobe | Acrobat Dc | >= 17.011.30059, <= 17.011.30197 |
| Adobe | Acrobat Dc | >= 20.001.30005, <= 20.004.30005 |
| Adobe | Acrobat Reader Dc | >= 15.008.20082, <= 21.005.20054 |
| Adobe | Acrobat Reader Dc | >= 17.011.30059, <= 17.011.30197 |
| Adobe | Acrobat Reader Dc | >= 20.001.30005, <= 20.004.30005 |
References
- https://helpx.adobe.com/security/products/acrobat/apsb21-51.htmlPatch, Vendor Advisory
- https://helpx.adobe.com/security/products/acrobat/apsb21-51.htmlPatch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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