CVE-2021-28550
HIGH KEVAdobe Acrobat and Acrobat Reader DC < 21.001.20150 and Acrobat and Acrobat Reader < 17.011.30194 - Use-After-Free
Title source: llmExploitation Summary
CVE-2021-28550 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added November 3, 2021.
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 a Use After Free vulnerability. 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.
References (2)
Core 2
Core References
Release Notes, Vendor Advisory
https://helpx.adobe.com/security/products/acrobat/apsb21-29.html
Third Party Advisory, US Government Resource
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-28550
Scores
CVSS v3
8.8
EPSS
0.3072
EPSS Percentile
96.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
active
Automatable
no
Technical Impact
total
Details
CISA KEV
2021-11-03
VulnCheck KEV
2021-05-11
InTheWild.io
2021-05-11
ENISA EUVD
EUVD-2021-15226
CWE
CWE-416
Status
published
Products (4)
adobe/acrobat
17.011.30059 - 17.011.30194
adobe/acrobat_dc
15.008.20082 - 21.001.20150
adobe/acrobat_reader
17.011.30059 - 17.011.30194
adobe/acrobat_reader_dc
15.008.20082 - 21.001.20150
Published
Sep 02, 2021
KEV Added
Nov 03, 2021
Tracked Since
Feb 18, 2026