What is CVE-2021-40728?

CVE-2021-40728 is a high-severity vulnerability in Adobe Acrobat Reader, classified under Use After Free. CVSS score: 7.8/10. Published 2021-10-15.

How severe is CVE-2021-40728?

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

Is CVE-2021-40728 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Use After Free in Adobe Acrobat Reader

CVE-2021-40728

Adobe Acrobat Reader DC version 21.007.20095 (and earlier), 21.007.20096 (and earlier), 20.004.30015 (and earlier), and 17.011.30202 (and earlier) is affected by a use-after-free vulnerability in the processing of the GetURL function on a…

Vulnerability class: Use-After-Free

EPSS: 0.535 (98.9th 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 Reader — versions unspecified

Weakness classification (CWE)

CWE-416 — Use After Free

Public proof-of-concept exploits

References

helpx.adobe.com/security/products/acrobat/apsb21-104.html (x_refsource_MISC)

Frequently asked questions

What is CVE-2021-40728?: CVE-2021-40728 is a high-severity vulnerability in Adobe Acrobat Reader, classified under Use After Free. CVSS score: 7.8/10. Published 2021-10-15.
How severe is CVE-2021-40728?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2021-40728 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.