What is CVE-2021-28553?

CVE-2021-28553 is a high-severity vulnerability in Adobe Acrobat, classified under Use After Free. CVSS score: 8.8/10. Published 2021-09-02.

How severe is CVE-2021-28553?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2021-28553 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

CVE-2021-28553

Acrobat Reader DC versions versions 2021.001.20150 (and earlier), 2020.001.30020 (and earlier) and 2017.011.30194 (and earlier) are affected by an Use After Free vulnerability. An unauthenticated attacker could leverage this vulnerability…

Vulnerability class: Use-After-Free

EPSS: 0.035 (88.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/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

Public proof-of-concept exploits

References

psirt@adobe.com (x_refsource_MISC, Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2021-28553?: CVE-2021-28553 is a high-severity vulnerability in Adobe Acrobat, classified under Use After Free. CVSS score: 8.8/10. Published 2021-09-02.
How severe is CVE-2021-28553?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2021-28553 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.