CVE-2021-21086

HIGH

Adobe Acrobat < 17.011.30188 - Out-of-Bounds Write

Title source: rule
STIX 2.1

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.

Exploits (1)

nomisec WORKING POC 28 stars
by infobyte · poc
https://github.com/infobyte/Exploit-CVE-2021-21086

References (1)

Core 1
Core References

Scores

CVSS v3 7.8
EPSS 0.1176
EPSS Percentile 93.7%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Details

CWE
CWE-787
Status published
Products (4)
adobe/acrobat 17.011.30056 - 17.011.30188
adobe/acrobat_dc 20.006.20042 - 20.013.20074
adobe/acrobat_reader 17.011.30059 - 17.011.30188
adobe/acrobat_reader_dc 20.006.20042 - 20.013.20074
Published Sep 02, 2021
Tracked Since Feb 18, 2026