CVE-2021-39843 — Out-of-bounds Write in Adobe Acrobat Reader

CWE-787 — Out-of-bounds Write5 documents5 sources
Severity
7.8HIGHNVD
EPSS
31.3%
top 3.22%
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 an out-of-bounds write vulnerability 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_reader20.001.30005 — 20.004.30006+1
▶NVDadobe/acrobat_reader_dc15.008.20082 — 21.005.20058+1
▶NVDadobe/acrobat20.001.30005 — 20.004.30006+1
▶NVDadobe/acrobat_dc15.008.20082 — 21.005.20058+1

🔴Vulnerability Details

2
GHSA
GHSA-gxxm-62f6-2gc2: Acrobat Reader DC versions 2021↗2022-05-24
▶
CVEList
Adobe Acrobat Reader XObject Out-of-Bound Write Vulnerability↗2021-09-29
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🕵️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-2021-39843 — Out-of-bounds Write in Adobe | cvebase