Out-of-bounds write in MediaTek Modem
CVE-2026-20432 is an out-of-bounds write vulnerability in the MediaTek modem component caused by a missing bounds check. According to the provided vendor description, the flaw can be triggered when a user equipment (UE) device connects to a rogue base station controlled by an attacker. Successful exploitation can result in remote escalation of privilege. The issue is tracked by MediaTek as Issue ID MSV-4461 and Patch ID MOLY01406170.
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
If you can’t patch tonight, do this now.
Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
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.
Recent activity
5 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 device connects to a rogue base station controlled by an attacker.
An Android Security Bulletin vulnerability listed as not applicable to Samsung devices in this bulletin.
The version that knows your environment.
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.