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CVE-2026-32669: Buffalo Wcr-1166dhpl Firmware Code Injection (CVSS 8.7)

CVE-2026-32669 is a high severity code injection in Buffalo Wcr-1166dhpl Firmware with a CVSS score of 8.7. Apply the vendor fix and confirm exposure on internet facing and business critical assets first.

Last updated: Jun 17, 2026

Quick answer

Direct answer

CVE-2026-32669 is a high severity code injection in Buffalo Wcr-1166dhpl Firmware with a CVSS score of 8.7. Apply the vendor fix and confirm exposure on internet facing and business critical assets first.

Risk scores

CVSS base score
8.7HIGH
EPSS probability
0.48%
Higher than 40 percent of all CVEs
CISA KEV
Not listed
CVSS metricWhat it means
Attack vector (AV:N)Network: reachable remotely
Attack complexity (AC:L)Low complexity
Attack requirements (AT:N)No attack requirements
Privileges required (PR:N)No privileges required
User interaction (UI:P)Passive user interaction
Confidentiality (VC:H)High confidentiality impact
Integrity (VI:H)High integrity impact
Availability (VA:H)High availability impact

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

About Buffalo Wcr-1166dhpl Firmware

CVE-2026-32669 affects Buffalo Wcr-1166dhpl Firmware, a product from Buffalo. Before acting, confirm where Buffalo Wcr-1166dhpl Firmware runs in your estate, who owns it and whether it is reachable from the internet, because exposure decides real risk more than the score alone.

What the flaw is

In plain terms: Code injection vulnerability exists in BUFFALO Wi-Fi router products. If this vulnerability is exploited, an arbitrary code may be executed on the products.

The weakness class is Code Injection. Attacker input is executed as program code.

Based on its CVSS vector, the flaw can be reached over the network, needs no login, and relies on a user taking an action. Apply the vendor fix and confirm exposure on internet facing and business critical assets first.

Affected versions and timeline

FieldDetail
ProductBuffalo Wcr-1166dhpl Firmware
Affected versionsWcr-1166dhpl Firmware before 1.01; Wsr3600be4-Kh Firmware before 6.02; Wsr3600be4p Firmware before 5.02; Wxr-1750dhp Firmware before 2.63; Wxr-1750dhp2 Firmware before 2.63; Wxr18000be10p Firmware before 5.03; Wxr-1900dhp Firmware before 2.53; Wxr-1900dhp2 Firmware before 2.62; Wxr-1900dhp3 Firmware before 2.66; Wxr-5950ax12 Firmware before 3.57; Wxr-6000ax12b Firmware before 3.57; Wxr-6000ax12p Firmware before 3.57
PublishedMar 27, 2026
Last modifiedJun 17, 2026
Added to CISA KEVNot listed
Assigning CNAvultures@jpcert.or.jp

How to detect it

  • Inventory every instance of Buffalo Wcr-1166dhpl Firmware and record the running version against the affected range above.
  • Check external attack surface scans for internet facing instances of the component.
  • Review logs on affected systems for unusual requests, errors or new processes around the vulnerable function.
  • Confirm with an authenticated vulnerability scan once your scanner has a check for this CVE.

How to fix it

  • Apply the fixed version of Buffalo Wcr-1166dhpl Firmware named in the vendor advisory.
  • If patching must wait, restrict network access to the affected service and put it behind authentication or a web application firewall rule.
  • Rescan after the change to prove the exposure is gone, then close the ticket.

CTEM action plan

CTEM stageWhat to do for this CVE
ScopeAdd every business service that depends on Buffalo Wcr-1166dhpl Firmware to the current CTEM cycle.
DiscoverFind all instances, including shadow and cloud deployments, and record versions and exposure.
PrioritizeRank using EPSS and CVSS together with asset exposure and business impact.
ValidateConfirm the flaw is reachable and exploitable in your environment and that compensating controls work.
MobilizeAssign the fix to the asset owner with a due date matched to the priority, then verify closure.

CWE References

Technical References

Frequently asked questions

CVE-2026-32669 is a high severity code injection in Buffalo Wcr-1166dhpl Firmware with a CVSS score of 8.7. Apply the vendor fix and confirm exposure on internet facing and business critical assets first.

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