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WhatsApp Zero-Day Exploited in Targeted Attacks

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📰 1 unique sources, 2 articles

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WhatsApp patched a zero-day vulnerability (CVE-2025-55177) in its messaging apps for Apple iOS and macOS. The flaw allowed unauthorized users to process content from arbitrary URLs on targeted devices. The issue was exploited in conjunction with a recently disclosed Apple flaw (CVE-2025-43300) in targeted zero-day attacks. WhatsApp notified less than 200 users who may have been targeted as part of the spyware campaign. The vulnerability relates to insufficient authorization of linked device synchronization messages. The exploitation involved chaining the WhatsApp flaw with the Apple vulnerability, enabling sophisticated attacks against specific users. The CISA has added the vulnerability to its Known Exploited Vulnerabilities catalog and is advising federal agencies to apply mitigations by September 23, 2025.

Timeline

  1. 01.09.2025 16:02 📰 2 articles · ⏱ 15d ago

    WhatsApp Zero-Day Exploited in Targeted Attacks

    The CISA added CVE-2025-55177 to its Known Exploited Vulnerabilities catalog, citing active exploitation. The agency is advising federal agencies to apply mitigations by September 23, 2025.

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