CVE-2026-20433: In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote escalation…
CVE-2026-20433 · Severity: high · CVSS 8.8 · Published 2026-04-07
In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote escalation of privilege, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is needed for exploitation. Patch ID: MOLY01088681; Issue ID: MSV-4460.
No. Junglewise Threat Intelligence has no report of CVE-2026-20433 being exploited in the wild.
How severe is CVE-2026-20433?
High severity, with a CVSS score of 8.8, published 7 April 2026.
Which products and versions are affected?
MediaTek MT2735, MediaTek Mt2735 Firmware, MediaTek MT2737, MediaTek Mt2737 Firmware and 120 more. The advisory does not name versions.
Is there a fix for CVE-2026-20433?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2026-20433?
Check whether you run MediaTek MT2735, MediaTek Mt2735 Firmware, MediaTek MT2737 or one of the others listed. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.