Information Disclosure in Adobe Acrobat Pro DC (CVE‑2026‑81991) – Out‑of‑Bounds Read Vulnerability
What It Is – Adobe Acrobat Pro DC contains an out‑of‑bounds read flaw in the handling of Doc objects. An attacker can cause the application to read memory beyond the allocated buffer, exposing potentially sensitive data.
Exploitability – Remote exploitation is possible but requires user interaction (opening a malicious PDF or visiting a crafted web page). The CVSS 3.3 vector is AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N, indicating a low‑complexity, low‑privilege attack with limited impact.
Affected Products – Adobe Acrobat Pro DC (all supported versions prior to the September 2026 security update).
Why It Matters for Trust & Control Assurance
- Patch Management Controls – Demonstrates the need for continuous evidence that critical software updates are applied promptly, a core control across SOC 2, ISO 27001, NIST CSF and others.
- Secure Configuration & Input Validation – Highlights a gap in input‑validation controls; remediation evidence can be mapped to a single VCF control objective that satisfies many frameworks.
- Audit‑Ready Documentation – Recording the vulnerability, remediation timeline, and verification steps provides defensible proof for auditors and enterprise buyers demanding a transparent security posture.
Recommended Actions
- Deploy Adobe’s September 2026 security update to all Acrobat Pro DC installations immediately.
- Verify patch rollout via automated asset‑inventory tools and capture screenshots or logs as remediation evidence.
- Update your secure‑development or configuration‑management policies to include validation of document‑object handling.
- Incorporate the remediation into your continuous control‑monitoring platform to demonstrate ongoing compliance.