What’s Vulnerable › Vulnerabilities

CVE-2021-44714: Adobe Acrobat Reader Missing Custom Protocols in Warning Message Prompts

• Severity: low (CVSS 3.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-01-14 · updated 2026-06-17
• Weakness: CWE-657

Description

Acrobat Reader DC version 21.007.20099 (and earlier), 20.004.30017 (and earlier) and 17.011.30204 (and earlier) are affected by a Violation of Secure Design Principles that could lead to a Security feature bypass. Acrobat Reader DC displays a warning message when a user clicks on a PDF file, which could be used by an attacker to mislead the user. In affected versions, this warning message does not include custom protocols when used by the sender. User interaction is required to abuse this vulnerability as they would need to click 'allow' on the warning message of a malicious file.

Affected products

• Adobe Acrobat for Edge: from 17.011.30059 through 17.011.30204; from 20.001.30005 through 20.004.30017
• Adobe Acrobat DC: from 15.008.20082 through 21.007.20099
• Adobe Acrobat Reader: from 17.011.30059 through 17.011.30204; from 20.001.30005 through 20.004.30017
• Adobe Acrobat Reader: from 15.008.20082 through 21.007.20099

References

• https://helpx.adobe.com/security/products/acrobat/apsb22-01.html
• https://helpx.adobe.com/security/products/acrobat/apsb22-01.html

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