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High

Remote DoS in Unisoc NR Modem Input Validation

IdentifiersCVE-2025-11133CWE-20

CVE-2025-11133 is a vulnerability in the NR modem component, listed among Unisoc modem issues in the December 2025 Android Security Bulletin ecosystem. The provided description states that the flaw is caused by improper input validation in the modem. A remote attacker can supply malformed or otherwise invalid input to the affected modem component and trigger a system crash. Based on the available information, the issue is a denial-of-service condition rather than code execution or privilege escalation.

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ANALYST BRIEF

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.

Successful exploitation can cause a remote denial of service by crashing the affected system or modem-related functionality. The provided information indicates that no additional execution privileges are required, so the attack impact is limited to availability disruption based on the currently available details.

Mitigation

If you can’t patch tonight, do this now.

Where immediate patching is not possible, reduce exposure of the affected modem interface to untrusted remote input as much as operationally feasible, prioritize vendor firmware rollout for affected Unisoc-based devices, and monitor for crash/reboot patterns or modem instability that could indicate attempted exploitation. Because this is a modem-side remotely triggerable availability issue, mitigation options short of patching are limited.

Remediation

Patch, then assume compromise.

Apply the vendor/OEM firmware update that includes the fix for CVE-2025-11133, as referenced through the December 2025 Android security update chain. For Android deployments, ensure devices receive the relevant 2025-12-05 security patch level or the corresponding vendor-specific modem firmware update, since bulletin coverage can depend on OEM and chipset integration schedules.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

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VendorProductType
GoogleAndroidoperating_system

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What this page doesn’t show

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Exposure mapping

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Threat actor evidence

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Associated malware

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Detection signatures

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Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity2

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