CVE-2025-46176Network attack vector

Unauthenticated command execution via recoverable Telnet credential

Published May 23, 2025 · Updated May 23, 2025

Hardcoded credentials in D-Link DIR-605L 2.13B01 and DIR-816L 2.06B01 allow remote attackers to execute arbitrary commands over Telnet. The bin/telnetd.sh initialization script starts telnetd with the Alphanetworks user and a password read from etc/alpha_config/image_sign, whose firmware value is recoverable. Network access to the Telnet service and knowledge of the firmware-derived credential are sufficient for command execution on the router.

CVSS severity6.5
Medium
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Hardcoded credentials in D-Link DIR-605L 2.13B01 and DIR-816L 2.06B01 allow remote attackers to execute arbitrary commands over Telnet. The bin/telnetd.sh initialization script starts telnetd with the Alphanetworks user and a password read from etc/alpha_config/image_sign, whose firmware value is recoverable. Network access to the Telnet service and knowledge of the firmware-derived credential are sufficient for command execution on the router.

The record

CVE
CVE-2025-46176
Published
May 23, 2025
Updated
May 23, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-77, T1078
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 23, 2025CVE publishedPublication date reported by the CVE source.
  2. May 23, 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 vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
T1078Valid Accounts

Public exploit references

No public exploit references are available in this record.

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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