CVE-2025-55177

CVE-2025-55177 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added September 2, 2025. EIP tracks 1 public exploit from researchers including danielw98.

AI-analyzed exploit summary This repository provides a detailed technical analysis of the 2025 WhatsApp/ImageIO zero-click exploit chain (CVE-2025-55177 + CVE-2025-43300), including a research paper, interactive web companion, and hands-on labs for heap/stack exploitation. It includes patch diffs, root cause analysis, and educational resources.

Incomplete authorization of linked device synchronization messages in WhatsApp for iOS prior to v2.25.21.73, WhatsApp Business for iOS v2.25.21.78, and WhatsApp for Mac v2.25.21.78 could have allowed an unrelated user to trigger processing of content from an arbitrary URL on a target’s device. We assess that this vulnerability, in combination with an OS-level vulnerability on Apple platforms (CVE-2025-43300), may have been exploited in a sophisticated attack against specific targeted users.