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CVE-2021-28559: Adobe Acrobat Reader privacy violation vulnerability could lead to privilege escalation

• Severity: medium (CVSS 5.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-09-02 · updated 2026-06-17
• Weakness: CWE-359

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 an Information Exposure vulnerability. An unauthenticated attacker could leverage this vulnerability to get access to restricted data stored within global variables and objects.

Affected products

• Adobe Acrobat for Edge: from 17.011.30059 through 17.011.30194; from 20.001.30005 through 20.001.30020
• Adobe Acrobat DC: from 15.008.20082 through 21.001.20150
• Adobe Acrobat Reader: from 17.011.30059 through 17.011.30194; from 20.001.30005 through 20.001.30020
• 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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