CVE-2026-34621
8.6 · HIGH Actively ExploitedOverview
CVE-2026-34621 is a high-severity vulnerability affecting adobe acrobat_dc. It was published on April 11, 2026 and has a CVSS 3.1 base score of 8.6 (HIGH). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.
This vulnerability has a CVSS 3.1 base score of 8.6, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
Technical Description
Acrobat Reader versions 24.001.30356, 26.001.21367 and earlier are affected by an Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') vulnerability that could result in 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.
Remediation
Check the references section for vendor advisories and patches from adobe. Update acrobat_dc 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_dc | >= 0, < 26.001.21411 | Affected |
| adobe | acrobat_reader_dc | >= 0, < 26.001.21411 | Affected |
| adobe | acrobat | >= 24.0.0, < 24.001.30362 | Affected |
Frequently Asked Questions
What is CVE-2026-34621?
CVE-2026-34621 is a high-severity vulnerability affecting adobe acrobat_dc. It was published on April 11, 2026 and has a CVSS 3.1 base score of 8.6 (HIGH). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.
How severe is CVE-2026-34621?
This vulnerability has a CVSS 3.1 base score of 8.6, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-34621?
Check the references section for vendor advisories and patches from adobe. Update acrobat_dc 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-2026-34621?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-34621 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.
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