CVE-2025-45987
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedBlink 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.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceMultiple Blink router models contain command injection vulnerabilities in the bs_SetDNSInfo function. Attackers can inject arbitrary OS commands through the dns1 and dns2 parameters, likely achieving root-level code execution given the CVSS 9.8 score.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= 2.4.9= 1.0.4= 1.2.3= 1.0.0= 1.2.8= 4.0.0= 1.2.7CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify router modelAccess the router's web administration panel or check the device label/menu for the exact model name (e.g., Bl Wr9000, Bl Ac2100 Az3, Bl Lte300, Bl F1200 At1, Bl X26 Ac8, Blac450m Ae4, Bl X26 Da3)Affected if The model matches one of the affected Blink router variants
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Check firmware versionLog into the router web interface and navigate to Status or System settings to view the firmware version, or use the router's diagnostic/backup settings to retrieve version informationAffected if The installed firmware version exactly matches any of these: 2.4.9, 1.0.4, 1.2.3, 1.0.0, 1.2.8, 4.0.0, or 1.2.7
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Confirm web management interface is accessibleAttempt to access the router's IP address on ports 80 or 443 from the network where the router is deployedAffected if The router's web management interface is reachable (indicating the vulnerable bs_SetDNSInfo function may be exposed)
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Verify DNS configuration function existsIf accessible, locate the DNS settings page in the router web interface (typically under Network or Internet settings) where dns1 and dns2 parameters can be modifiedAffected if The DNS configuration interface with editable dns1/dns2 fields is present and functional
You are affected if you have a Blink router model matching one of the seven listed variants AND the firmware version exactly matches the vulnerable version AND the router web management interface is accessible from your network.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataApply vendor firmware updates when available; until then, restrict access to router web management interfaces from untrusted networks.
- Consultation4.0 h
- Implementation2.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-45987 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-45987 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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