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CVE-2025-20634

Mediatek Nr16 remote code execution

9.8 CRITICALEPSS 0.77%
  1. Published3 Feb 2025

Description

In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote code execution, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01289384; Issue ID: MSV-2436.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Mediatek Nr16all versions
Mediatek Nr17all versions
Mediatek Nr17rall versions

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2025-20634 being actively exploited?

CVE-2025-20634 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.77%.

How severe is CVE-2025-20634?

CVE-2025-20634 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.77% probability of exploitation.

Which products are affected by CVE-2025-20634?

Affected products include Mediatek Nr16, Mediatek Nr17, Mediatek Nr17r.

How do I fix CVE-2025-20634?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-20634 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.