What is CVE-2021-28557?

CVE-2021-28557 is a medium-severity vulnerability in Adobe Acrobat, classified under Out-of-bounds Read. CVSS score: 4.3/10. Published 2021-09-02.

How severe is CVE-2021-28557?

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

Out-of-bounds Read in Adobe Acrobat

CVE-2021-28557

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 Out-of-bounds Read vulnerability. An unauthenticated attacker could leverage this vulnerability to leak sensitive system information 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: Buffer Overflow

EPSS: 0.018 (76.2th percentile) — read the EPSS interpretation.

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.

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-125 — Out-of-bounds Read

References

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

Frequently asked questions

What is CVE-2021-28557?: CVE-2021-28557 is a medium-severity vulnerability in Adobe Acrobat, classified under Out-of-bounds Read. CVSS score: 4.3/10. Published 2021-09-02.
How severe is CVE-2021-28557?: Medium severity. CVSS v3 base score is 4.3 out of 10.