What is CVE-2021-28558?

CVE-2021-28558 is a high-severity vulnerability in Adobe Acrobat, classified under Heap-based Buffer Overflow. CVSS score: 8.8/10. Published 2021-09-02.

How severe is CVE-2021-28558?

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

Buffer overflow in Adobe Acrobat

CVE-2021-28558

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 Heap-based buffer overflow vulnerability in the PDFLibTool component. 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: Buffer Overflow

EPSS: 0.104 (95.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/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-122 — Heap-based Buffer Overflow

References

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

Frequently asked questions

What is CVE-2021-28558?: CVE-2021-28558 is a high-severity vulnerability in Adobe Acrobat, classified under Heap-based Buffer Overflow. CVSS score: 8.8/10. Published 2021-09-02.
How severe is CVE-2021-28558?: High severity. CVSS v3 base score is 8.8 out of 10.