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CVE-2026-20433 is an out-of-bounds write vulnerability in the MediaTek modem component caused by a missing bounds check. The flaw can be triggered in a radio communication context when a user equipment device connects to a rogue base station controlled by an attacker. Successful exploitation can result in remote escalation of privilege from the modem attack surface without requiring additional execution privileges on the target device. The issue is tracked by MediaTek as Patch ID MOLY01088681 and Issue ID MSV-4460.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
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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.
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An out-of-bounds write vulnerability in MediaTek Modem caused by a missing bounds check that could allow remote escalation of privilege when a user equipment connects to a rogue attacker-controlled base station.
An Android Security Bulletin vulnerability already included in previous Samsung updates before this April 2026 release.
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.