CVE-2025-45987Public exploitNetwork attack vector

Unauthenticated command execution via DNS parameter injection

Published Jun 13, 2025 · Updated Jun 13, 2025

Command injection in Blink router firmware allows remote attackers to execute arbitrary commands through crafted DNS settings. The bs_SetDNSInfo handler passes attacker-controlled dns1 and dns2 values to bl_do_system as arguments for config-dns.sh without command neutralization. The eight affected builds are BL-WR9000 2.4.9, BL-AC2100_AZ3 1.0.4, BL-X10_AC8 1.0.5, BL-LTE300 1.2.3, BL-F1200_AT1 1.0.0, BL-X26_AC8 1.2.8, BLAC450M_AE4 4.0.0, and BL-X26_DA3 1.2.7; the published request contains an admin cookie despite CISA's no-privileges assessment.

CVSS severity9.8
Critical
EPSS probability1.86%
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 Blink router firmware allows remote attackers to execute arbitrary commands through crafted DNS settings. The bs_SetDNSInfo handler passes attacker-controlled dns1 and dns2 values to bl_do_system as arguments for config-dns.sh without command neutralization. The eight affected builds are BL-WR9000 2.4.9, BL-AC2100_AZ3 1.0.4, BL-X10_AC8 1.0.5, BL-LTE300 1.2.3, BL-F1200_AT1 1.0.0, BL-X26_AC8 1.2.8, BLAC450M_AE4 4.0.0, and BL-X26_DA3 1.2.7; the published request contains an admin cookie despite CISA's no-privileges assessment.

The record

CVE
CVE-2025-45987
Published
Jun 13, 2025
Updated
Jun 13, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-77, T1059
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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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')
T1059Command and Scripting Interpreter

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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