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CVE-2026-55277 is an Android System vulnerability in the UICC routing configuration logic. The checkUiccListenConfigNeeded function performs an out-of-bounds write because it lacks a required bounds check. A proximal or adjacent attacker may trigger memory corruption and obtain code execution without user interaction or pre-existing execution privileges.
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No public exploit code observed for this vulnerability.
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Critical elevation-of-privilege vulnerability in Android System.
Critical Android System elevation-of-privilege vulnerability affecting Android 16 QPR2 and Android 17.
An out-of-bounds write caused by a missing bounds check in RoutingManager.cpp's checkUiccListenConfigNeeded function. It may enable adjacent/proximal remote code execution without additional privileges or user interaction.
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.