CVE-2021-39855 — Sensitive Information Exposure in Adobe Acrobat Reader

CWE-200 — Sensitive Information Exposure4 documents4 sources
Severity
6.5MEDIUMNVD
EPSS
2.0%
top 16.19%
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 ActiveX Control versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by an Information Disclosure vulnerability. An unauthenticated attacker could leverage this vulnerability to obtain NTLMv2 credentials. Exploitation of this issue requires user interaction in that a victim must open a maliciously crafted Microsoft Office file, or visit an attacker controlled web page.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:NExploitability: 2.8 | Impact: 3.6

Affected Packages5 packages

▶CVEListV5adobe/acrobat_readerunspecified — 2020.004.30006+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-5w26-4xc6-726p: Acrobat Reader DC ActiveX Control versions 2021↗2022-05-24
▶
CVEList
Adobe Acrobat Reader DC NTLMv2 SSO Information Disclosure via src Parameter↗2021-09-29
▶

🕵️Threat Intelligence

1
Qualys
Microsoft and Adobe Patch Tuesday (September 2021) – Microsoft 60 Vulnerabilities with 3 Critical, Adobe 61 Vulnerabilities↗2021-09-14
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CVE-2021-39855 — Sensitive Information Exposure | cvebase