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CVE-2021-28562: Adobe Acrobat Reader use-after-free could lead to arbitrary code execution

• Severity: medium (CVSS 6.8 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 5.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-06-28 · updated 2026-06-17
• Weakness: CWE-416

Description

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 when executing search queries through Javascript. 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.

Affected products

• Adobe Acrobat DC: from 15.008.20082 through 21.001.20150
• Adobe Acrobat Reader: from 15.008.20082 through 21.001.20150

References

• https://helpx.adobe.com/security/products/acrobat/apsb21-29.html
• https://helpx.adobe.com/security/products/acrobat/apsb21-29.html

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