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CVE-2026-53415 is a high-severity memory-safety vulnerability in the annotator function of Zoom Clients. The issue is described by Zoom as a use-after-free condition that may allow a meeting participant to achieve remote code execution on another participant via network access. Technical reporting further associates the flaw with Zoom’s annotation engine and handling of an auto-shape metadata object, where attacker-controlled data can influence internal linked-list processing after unsafe memory handling, resulting in memory corruption and a potential write-what-where primitive. The vulnerability affects the annotation feature used during meetings and is reachable through crafted annotation traffic exchanged between participants.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
24 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Use-after-free vulnerability in Zoom associated with the Zoomsday bug set and assessed by researchers as part of a possible zero-click attack chain.
A Zoom-related CVE mentioned in connection with the Zoomsday report; the content states Zoom had already found and fixed it.
A Zoom Workplace / Zoom Meetings vulnerability tracked as CVE-2026-53415 and referenced by advisory ZSB-26017. The content indicates it is a network-reachable issue with user interaction required and high impact to confidentiality, integrity, and availability.
A vulnerability affecting Zoom Meetings / Zoom Workplace on Windows, referenced in Zoom security bulletin ZSB-26017.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.