MEDIUM
CVE-2025-66954
CWE-639Published: April 20, 2026· Updated: Apr 20, 2026
6.5
CVSS v3.1
EPSS:0.01%probability of exploitation in 30 daysPercentile:1.2th
Official Description
A vulnerability exists in the Buffalo Link Station version 1.85-0.01 that allows unauthenticated or guest-level users to enumerate valid usernames and their associated privilege roles. The issue is triggered by modifying a parameter within requests sent to the /nasapi endpoint.
Technical Analysis
CVE-2025-66954 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 6.5.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
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GitHub PoC Search
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Rapid7 / Metasploit
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PacketStorm
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NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
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All References (1)
Quick Facts
CVE IDCVE-2025-66954
CVSS Score6.5 / 10
SeverityMEDIUM
WeaknessCWE-639
CISA KEVNo
EPSS (30d)0.01%
PublishedApr 20, 2026
Related CVEs (CWE-639)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2025-66954 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.