ZDI-26-672: Adobe Acrobat Reader DC PDF File Parsing Integer Underflow Information Disclosure Vulnerability
ZDI disclosed CVE-2026-81977, an integer underflow in Adobe Acrobat Reader DC PDF parsing that enables sensitive information disclosure.
Zero Day Initiative advisory ZDI-26-672 reports an integer underflow in PDF file parsing in Adobe Acrobat Reader DC. A remote attacker could disclose sensitive information, but exploitation requires the victim to open a malicious file or visit a malicious page. The flaw carries a low CVSS score of 3.3. No exploitation is reported.