# CVE-2021-28550

Acrobat Reader DC versions versions 2021.001.20150 (and earlier), 2020.001.30020 (and earlier) and 2017.011.30194 (and earlier) are affected by a Use After Free vulnerability. 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.

- Page: https://www.vulneraibility.com/cve/CVE-2021-28550
- CVSS: 8.8
- Known exploited: yes, in CISA KEV since 2021-11-03; CISA due date 2021-11-17
- EPSS: 52.13% (percentile 99.0)
- CISA SSVC: exploitation active, automatable no, technical impact total (assessed 2025-02-04)
- Weakness: CWE-416
- Published: 2021-09-02

## Affected versions

- Adobe Acrobat Reader: affected <= 2020.001.30020; <= 2021.001.20150; <= 2017.011.30194; <= None

A version outside these ranges is not a statement that it is unaffected.

## References

- [other] https://helpx.adobe.com/security/products/acrobat/apsb21-29.html
- [other] https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-28550

---
Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.