What’s Vulnerable › Vulnerabilities

CVE-2021-21046: Acrobat Reader DC Buffer Overflow Vulnerability Could Lead To Arbitrary Code Execution

• Severity: medium (CVSS 4.3 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-02-11 · updated 2026-06-17
• Weakness: CWE-787

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 an memory corruption vulnerability. An unauthenticated attacker could leverage this vulnerability to cause an application denial-of-service. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

Affected products

• Adobe Acrobat for Edge: from 17.0 through 17.011.30188; from 20.0 through 20.001.30018
• Adobe Acrobat DC: through 20.013.20074
• Adobe Acrobat Reader: from 17.0 through 17.011.30188; from 20.0 through 20.001.300183
• Adobe Acrobat Reader: through 20.013.20074

References

• https://helpx.adobe.com/security/products/acrobat/apsb21-09.html
• https://helpx.adobe.com/security/products/acrobat/apsb21-09.html

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