ZDI-26-676: Adobe Acrobat Reader DC DigSig Use-After-Free Remote Code Execution Vulnerability
ZDI disclosed CVE-2026-81973, a use-after-free in Adobe Acrobat Reader DC digital signature handling that enables remote code execution.
Zero Day Initiative advisory ZDI-26-676 describes a use-after-free vulnerability in the DigSig (digital signature) feature of Adobe Acrobat Reader DC. Exploitation requires the target to open a malicious file or visit a malicious page, after which arbitrary code can execute. The flaw carries a CVSS score of 7.8. No in-the-wild exploitation is reported.
- CVE-2026-81973 assigned; CVSS 7.8
- Use-after-free in Acrobat Reader DC digital signature processing
- User interaction required for code execution
- CVEs
- CVE-2026-81973
- Vendors
- AdobeZero Day Initiative
- Products
- Adobe Acrobat Reader DC
- Organizations
- Zero Day Initiative
Vulnerabilities mentioned
All| CVE | Vulnerability | CVSS | EPSS | Signals | Published |
|---|---|---|---|---|---|
| CVE-2026-81973 | Use-After-Free Code Execution Flaw in Adobe Acrobat Reader | 7.8 | <1% |
From the original article
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Adobe Acrobat Reader DC. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The ZDI has assigned a CVSS rating of 7.
zerodayinitiative.com
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