What is CVE-2021-39839?

CVE-2021-39839 is a high-severity vulnerability in Adobe Acrobat Reader, classified under Use After Free. CVSS score: 7.8/10. Published 2021-09-29.

How severe is CVE-2021-39839?

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

Use After Free in Adobe Acrobat Reader

CVE-2021-39839

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 getItem action that could result in arb…

Vulnerability class: Use-After-Free

EPSS: 0.643 (99.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Adobe Acrobat Reader — versions unspecified

Weakness classification (CWE)

CWE-416 — Use After Free

References

helpx.adobe.com/security/products/acrobat/apsb21-55.html (x_refsource_MISC)

Frequently asked questions

What is CVE-2021-39839?: CVE-2021-39839 is a high-severity vulnerability in Adobe Acrobat Reader, classified under Use After Free. CVSS score: 7.8/10. Published 2021-09-29.
How severe is CVE-2021-39839?: High severity. CVSS v3 base score is 7.8 out of 10.