🚨 ZOOMSDAY IS HERE: Zoom Zero-Click RCE Lets Hackers Hijack Your Device Mid-Meeting — No Click Needed! 😱
CVE-2026-53413 (aka "Zoomsday") lets an attacker in your Zoom call run code on YOUR device with ZERO clicks — no link, no file, no prompt. Just being in the meeting is enough.
🔥 The Bug:
Zoom's annotation feature auto-parses attacker-controlled data. A flawed function (CAnnoFormatBlock::Deserialize) trusts an unchecked 32-bit length field → classic buffer overflow → chained with a memory leak + use-after-free → full RCE.
😳 Wildest part? Researchers built the entire exploit chain in under 24 HOURS using fewer than 20 AI prompts. Nation-state-level exploits are now a weekend project.
📊 4 CVEs patched (ZSB-26015→26018):
- CVE-2026-53413 – Zero-click RCE (8.3 High)
- CVE-2026-53414 – Memory leak (6.5 Med)
- CVE-2026-53415 – Use-after-free RCE (8.3 High)
- CVE-2026-53416 – VDI path traversal (High)
✅ Patch NOW:
Zoom Workplace 7.1.5/7.0.6 | Rooms 7.1.5 | SDK 7.1.5 | VDI Client 7.0.11/6.6.16
👨💻 Devs & SOC teams — this is a masterclass in why "harmless" auto-parsing features (annotations, whiteboards, remote-control) are real attack surfaces. Read the full technical breakdown 👇
🔗 https://www.xpert4cyber.com/2026/08/zoom-zero-click-vulnerability-cve-2026-53413-zoomsday.html
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