CVE-2025-22937Public exploit

Root shell access via SysRq-enabled debug console

Published Mar 31, 2025 · Updated Aug 18, 2025

Privilege escalation in Adtran 411 ONT L80.00.0011.M2 allows physically proximate attackers to obtain a root shell via the UART console. The exposed debug serial console leaves Linux Magic SysRq enabled, and sending its SIGKILL command drops the console into a root shell. Physical access near the enclosure is required to reach the UART pins through its vents; the result is full device-level command execution.

CVSS severity9.8
Critical
EPSS probability0.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege escalation in Adtran 411 ONT L80.00.0011.M2 allows physically proximate attackers to obtain a root shell via the UART console. The exposed debug serial console leaves Linux Magic SysRq enabled, and sending its SIGKILL command drops the console into a root shell. Physical access near the enclosure is required to reach the UART pins through its vents; the result is full device-level command execution.

The record

CVE
CVE-2025-22937
Published
Mar 31, 2025
Updated
Aug 18, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-269, T1059.004
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 31, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 18, 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

9.8CISA-ADPCVSS:3.1/AV:N/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-269Improper Privilege Management
T1059.004Command and Scripting Interpreter: Unix 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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