CVE-2021-39836 — Use After Free in Adobe Acrobat Reader

CWE-416 — Use After Free5 documents5 sources
Severity
7.8HIGHNVD
EPSS
45.5%
top 2.38%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
Adobe Acrobat ReaderAdobe AcrobatAdobe Acrobat DC+1 more
Timeline
PublishedSep 29
Latest updateMay 24

Description

Acrobat Reader DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by a use-after-free vulnerability in the processing of the AcroForm buttonGetIcon action that could result in 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.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages5 packages

▶CVEListV5adobe/acrobat_readerunspecified — DC 2021 July+3
▶NVDadobe/acrobat_reader17.011.30059 — 17.011.30199+1
▶NVDadobe/acrobat_reader_dc15.008.20082 — 21.005.20058+1
▶NVDadobe/acrobat17.011.30059 — 17.011.30199+1
▶NVDadobe/acrobat_dc15.008.20082 — 21.005.20058+1

🔴Vulnerability Details

2
GHSA
GHSA-742p-c75r-3hmv: Acrobat Reader DC versions 2021↗2022-05-24
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CVEList
Adobe Acrobat Reader DC AcroForm buttonGetIcon Use-After-Free Remote Code Execution Vulnerability↗2021-09-29
▶

🕵️Threat Intelligence

2
Qualys
Microsoft and Adobe Patch Tuesday (September 2021) – Microsoft 60 Vulnerabilities with 3 Critical, Adobe 61 Vulnerabilities↗2021-09-14
▶
Zscaler
Zscaler protects against 4 Adobe vulnerability | 9-14-2021↗
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CVE-2021-39836 — Use After Free in Adobe Acrobat Reader | cvebase