Blink BL-X26_DA3 bs_SetDNSInfo dns1/dns2 command injection

Summaryinfo

A vulnerability classified as critical has been found in Blink BL-WR9000, BL-AC2100_AZ3, BL-X10_AC8, BL-LTE300, BL-F1200_AT1, BL-X26_AC8, BLAC450M_AE4 and BL-X26_DA3. Impacted is the function bs_SetDNSInfo. This manipulation of the argument dns1/dns2 causes command injection. This vulnerability appears as CVE-2025-45987. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability has been found in Blink BL-WR9000, BL-AC2100_AZ3, BL-X10_AC8, BL-LTE300, BL-F1200_AT1, BL-X26_AC8, BLAC450M_AE4 and BL-X26_DA3 and classified as critical. Affected by this vulnerability is the function bs_SetDNSInfo. The manipulation of the argument dns1/dns2 with an unknown input leads to a command injection vulnerability. The CWE definition for the vulnerability is CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Blink routers BL-WR9000 V2.4.9 , BL-AC2100_AZ3 V1.0.4, BL-X10_AC8 v1.0.5 , BL-LTE300 v1.2.3, BL-F1200_AT1 v1.0.0, BL-X26_AC8 v1.2.8, BLAC450M_AE4 v4.0.0 and BL-X26_DA3 v1.2.7 were discovered to contain multiple command injection vulnerabilities via the dns1 and dns2 parameters in the bs_SetDNSInfo function.

The advisory is shared at github.com. This vulnerability is known as CVE-2025-45987 since 04/22/2025. The exploitation appears to be easy. The attack can be launched remotely. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/13/2025). MITRE ATT&CK project uses the attack technique T1202 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-18262). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• Blink

Name

• BL-AC2100_AZ3
• BL-F1200_AT1
• BL-LTE300
• BL-WR9000
• BL-X10_AC8
• BL-X26_AC8
• BL-X26_DA3
• BLAC450M_AE4

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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