What’s Vulnerable › Vulnerabilities

CVE-2021-28545: Acrobat Reader DC Missing Support for Integrity Check

• Severity: medium (CVSS 5.8 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-04-01 · updated 2026-06-17
• Weakness: CWE-353

Description

Acrobat Reader DC versions versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier) and 2017.011.30188 (and earlier) are missing support for an integrity check. An unauthenticated attacker would have the ability to completely manipulate data in a certified PDF without invalidating the original certification. Exploitation of this issue requires user interaction in that a victim must open the tampered file.

Affected products

• Adobe Acrobat for Edge: from 17.011.30059 through 17.011.30188; from 20.001.30005 through 20.001.30018
• Adobe Acrobat DC: from 15.008.20082 through 20.013.20074
• Adobe Acrobat Reader: from 17.011.30059 through 17.011.30188; from 20.001.30005 through 20.001.30018
• Adobe Acrobat Reader: from 15.008.20082 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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