CVE-2025-25736Public exploit

Physical root-shell access via unauthenticated ADB

Published Aug 26, 2025 · Updated Oct 22, 2025

Missing authentication in Kapsch TrafficCom RIS-9260 LEO firmware allows physically proximate attackers to obtain a root shell on its cellular modem. In builds 3.2.0.829.23, 3.8.0.1119.42, and 4.6.0.1211.28, default-enabled ADB accepts shell sessions without authentication and starts the modem shell as root. Reaching the flaw requires physical micro-USB access or local access to the RSU host and grants complete control of the modem.

CVSS severity6.8
Medium
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in Kapsch TrafficCom RIS-9260 LEO firmware allows physically proximate attackers to obtain a root shell on its cellular modem. In builds 3.2.0.829.23, 3.8.0.1119.42, and 4.6.0.1211.28, default-enabled ADB accepts shell sessions without authentication and starts the modem shell as root. Reaching the flaw requires physical micro-USB access or local access to the RSU host and grants complete control of the modem.

The record

CVE
CVE-2025-25736
Published
Aug 26, 2025
Updated
Oct 22, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-306, T1059.004
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 26, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 22, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.8CISA-ADPCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1059.004Unix Shell

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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