CVE-2021-28545
8.1 · HIGHOverview
CVE-2021-28545 is a high-severity vulnerability affecting adobe acrobat. It was published on April 1, 2021 and has a CVSS 3.1 base score of 8.1 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
Acrobat Reader DC versions versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier) and 2017.011.30188 (and earlier) are missing support for an integrity check. An unauthenticated attacker would have the ability to completely manipulate data in a certified PDF without invalidating the original certification. Exploitation of this issue requires user interaction in that a victim must open the tampered file.
Remediation
Check the references section for vendor advisories and patches from adobe. Update acrobat to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| adobe | acrobat | 17.011.30059 | Affected |
| adobe | acrobat_dc | 15.008.20082 | Affected |
| adobe | acrobat_reader | 17.011.30059 | Affected |
| adobe | acrobat_reader_dc | 15.008.20082 | Affected |
Frequently Asked Questions
What is CVE-2021-28545?
CVE-2021-28545 is a high-severity vulnerability affecting adobe acrobat. It was published on April 1, 2021 and has a CVSS 3.1 base score of 8.1 (HIGH).
How severe is CVE-2021-28545?
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-28545?
Check the references section for vendor advisories and patches from adobe. Update acrobat to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-28545?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-28545 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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Browser-based exploitation validates findings with real proof-of-concept.
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