CRITICAL
CVE-2026-27650
CWE-78Published: March 27, 2026· Updated: Mar 31, 2026
9.8
CVSS v3.1
EPSS:0.12%probability of exploitation in 30 daysPercentile:30.7th
Official Description
OS Command Injection vulnerability exists in BUFFALO Wi-Fi router products. If this vulnerability is exploited, an arbitrary OS command may be executed on the products.
Technical Analysis
CVE-2026-27650 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Vendors & Products
buffalo92 products
wcr-1166dhpl firmwarewcr-1166dhplwsr3600be4-kh firmwarewsr3600be4-khwsr3600be4p firmwarewsr3600be4pwxr-1750dhp firmwarewxr-1750dhpwxr-1750dhp2 firmwarewxr-1750dhp2wxr18000be10p firmwarewxr18000be10p+80 more
Source: NVD CPE · 92 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (2)
→
https://jvn.jp/en/jp/JVN83788689/Third Party Advisory
→
https://www.buffalo.jp/news/detail/20260323-01.htmlVendor Advisory
Quick Facts
CVE IDCVE-2026-27650
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-78
CISA KEVNo
EPSS (30d)0.12%
Affected1 vendor
PublishedMar 27, 2026
Related CVEs (CWE-78)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2026-27650 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.