What is CVE-2021-21039?

CVE-2021-21039 is a high-severity vulnerability in Adobe Acrobat, classified under Use After Free. CVSS score: 7.8/10. Published 2021-02-11.

How severe is CVE-2021-21039?

High severity. CVSS v3 base score is 7.8 out of 10.

Use After Free in Adobe Acrobat

CVE-2021-21039

Acrobat Reader DC versions versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier) and 2017.011.30188 (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.

Vulnerability class: Use-After-Free

EPSS: 0.030 (85.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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-416 — Use After Free

References

psirt@adobe.com (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-21039?: CVE-2021-21039 is a high-severity vulnerability in Adobe Acrobat, classified under Use After Free. CVSS score: 7.8/10. Published 2021-02-11.
How severe is CVE-2021-21039?: High severity. CVSS v3 base score is 7.8 out of 10.