Unrated severityNVD Advisory· Published Sep 29, 2021· Updated Apr 23, 2025
Adobe Acrobat Reader DC Information Disclosure via ActiveX LoadFile
CVE-2021-39857
Description
Adobe Acrobat Reader DC add-on for Internet Explorer versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by an Information Disclosure vulnerability. An unauthenticated attacker could leverage this vulnerability to check for existence of local files. Exploitation of this issue requires user interaction in that a victim must visit an attacker controlled web page.
Affected products
2- Range: <=2021.005.20060, <=2020.004.30006, <=2017.011.30199
- Range: unspecified
Patches
Vulnerability mechanics
References
1- helpx.adobe.com/security/products/acrobat/apsb21-55.htmlmitrex_refsource_MISC
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