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CVE-2026-13777 is a critical input-validation vulnerability in the iOSWeb component of Google Chrome on iOS prior to version 150.0.7871.47. The flaw stems from insufficient validation of untrusted input while processing attacker-controlled web content, allowing a crafted HTML page to trigger heap corruption. Publicly available information does not disclose the specific vulnerable function or code path, but the issue is characterized as arising during handling of untrusted input in iOSWeb and is reachable through remote web content.
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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.
5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical inadequate validation of untrusted input vulnerability in Chrome iOSWeb.
A critical insufficient validation of untrusted input vulnerability in Chrome for iOS Web handling.
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.