CVE-2021-39857

MEDIUM

Adobe Acrobat and Acrobat Reader DC - Unauthenticated Local File Existence Disclosure via Internet Explorer Add-on

Title source: llm

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.

References (1)

Core 1

Core References

Release Notes, Vendor Advisory x_refsource_misc

https://helpx.adobe.com/security/products/acrobat/apsb21-55.html

Scores

CVSS v3 4.3

EPSS 0.0244

EPSS Percentile 82.2%

Attack Vector NETWORK

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-200

Status published

Products (4)

adobe/acrobat 17.011.30059 - 17.011.30199

adobe/acrobat_dc 15.008.20082 - 21.005.20058

adobe/acrobat_reader 17.011.30059 - 17.011.30199

adobe/acrobat_reader_dc 15.008.20082 - 21.005.20058

Published Sep 29, 2021

Tracked Since Feb 18, 2026