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High · 7.8 Public exploit CVE-2021-21086 EUVD-2021-8477GHSA-mwr7-fm5x-rqch

Adobe Reader CoolType Arbitrary Stack Manipulation

Published Sep 2, 2021 · Updated Sep 17, 2024 · Assigned by adobe

Description

Acrobat Reader DC versions versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier) and 2017.011.30188 (and earlier) are affected by an Out-of-bounds Write vulnerability in the CoolType library. An unauthenticated attacker could leverage this vulnerability to achieve arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

Affected products

VendorProductAffectedFixed
Adobe Acrobat Reader unspecified – ≤ 2020.013.20074, unspecified – ≤ 2020.001.30018, unspecified – ≤ 2017.011.30188, unspecified – ≤ None —

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

References