CVE-2025-45986Public exploitNetwork attack vector

Arbitrary command execution via crafted MAC parameter

Published Jun 13, 2025 · Updated Jun 13, 2025

Command injection in eight LB-LINK router firmware builds allows remote attackers to execute arbitrary commands via a crafted mac value. The bs_SetMacBlack handler in libshare-0.0.26.so fails to neutralize command delimiters in mac, causing /bin/goahead to execute appended shell text. No authentication or user interaction is required; successful exploitation permits router data access, modification, and service interruption.

CVSS severity9.8
Critical
EPSS probability1.64%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in eight LB-LINK router firmware builds allows remote attackers to execute arbitrary commands via a crafted mac value. The bs_SetMacBlack handler in libshare-0.0.26.so fails to neutralize command delimiters in mac, causing /bin/goahead to execute appended shell text. No authentication or user interaction is required; successful exploitation permits router data access, modification, and service interruption.

The record

CVE
CVE-2025-45986
Published
Jun 13, 2025
Updated
Jun 13, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-77, CAPEC-248, CAPEC-15, T1059, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 13, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 13, 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

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 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 exploitPublished

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
CAPEC-248Command Injection
CAPEC-15Command Delimiters
T1059Command and Scripting Interpreter
T1190Exploit Public-Facing Application

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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