CVE-2026-56882

CVE-2026-56882 is a logic error in the Cellular Modem component of Android that results in information disclosure, which can be chained to achieve remote code execution in the modem (baseband) context with no additional execution privileges required. Because the flaw resides in modem firmware and exploitation requires no user interaction, an attacker on the same network path — or positioned to send crafted cellular/network traffic — could trigger the bug and execute code on the target device, subject to the low-privilege prerequisite described in the CVSS vector (PR:L). The vulnerability affects Android devices whose baseband firmware contains the flawed code, with fixes distributed via Google's Android security bulletin and OEM/carrier modem firmware updates. The flaw is rated high severity (CVSS 3.1: 8.8), but no public proof-of-concept exists and it is not listed in CISA's Known Exploited Vulnerabilities catalog, so exploitation status is currently none known.

What to do: Apply the latest Android security bulletin patch level and any accompanying OEM/carrier modem firmware update, since baseband fixes are typically delivered through the vendor's OTA channel rather than app stores. Prioritize flagship and carrier-managed fleets that receive modem firmware updates directly, and verify the device's current security patch level in Settings. Monitor vendor advisories for the bulletin that remediates this CVE and watch for anomalous baseband crashes or modem resets, which can indicate exploitation attempts.