What is CVE-2021-44739?

CVE-2021-44739 is a medium-severity vulnerability in Adobe Acrobat, classified under Information Disclosure. CVSS score: 4.3/10. Published 2022-01-14.

How severe is CVE-2021-44739?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Information disclosure in Adobe Acrobat

CVE-2021-44739

Acrobat Reader DC ActiveX Control versions 21.007.20099 (and earlier), 20.004.30017 (and earlier) and 17.011.30204 (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.

Vulnerability class: Information Disclosure

Published 2022-01-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.021 (80.7th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 80.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000

Affected products

Adobe Acrobat
Adobe Acrobat Dc
Adobe Acrobat Reader — versions unspecified
Adobe Acrobat Reader
Adobe Acrobat Reader Dc
Apple macOS
Microsoft Windows

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

helpx.adobe.com/security/products/acrobat/apsb22-01.html (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2021-44739?: CVE-2021-44739 is a medium-severity vulnerability in Adobe Acrobat, classified under Information Disclosure. CVSS score: 4.3/10. Published 2022-01-14.
How severe is CVE-2021-44739?: Medium severity. CVSS v3 base score is 4.3 out of 10.