CVE-2026-27650 | Buffalo Wi-Fi Router os command injection

VDB-353820 · CVE-2026-27650 · GCVE-0-2026-27650 BUFFALO WI-FI ROUTER OS COMMAND INJECTION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 9.3 $0-$5k 3.21+ Summaryinfo A vulnerability described as critical has been identified in Buffalo Wi-Fi Router. Impacted is an unknown function. The manipulation results in os command injection. This vulnerability is known as CVE-2026-27650. It is possible to launch the attack remotely. No exploit is available. Detailsinfo A vulnerability, which was classified as very critical, was found in Buffalo Wi-Fi Router (unknown version). Affected is an unknown code block. The manipulation with an unknown input leads to a os command injection vulnerability. CWE is classifying the issue as CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes: 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. The advisory is shared for download at buffalo.jp. This vulnerability is traded as CVE-2026-27650 since 03/25/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 03/27/2026). The MITRE ATT&CK project declares the attack technique as T1202. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Productinfo Type Router Operating System Vendor Buffalo Name Wi-Fi Router License commercial CPE 2.3info 🔒 CPE 2.2info 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA CVSS-B Score: 🔒 CNA CVSS-BT Score: 🔒 CNA Vector: 🔒 CVSSv3info VulDB Meta Base Score: 9.3 VulDB Meta Temp Score: 9.3 VulDB Base Score: 9.8 VulDB Temp Score: 9.8 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 8.8 CNA Vector (jpcert): 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Os command injection CWE: CWE-78 / CWE-77 / CWE-74 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: no mitigation known Status: 🔍 0-Day Time: 🔒 Timelineinfo 03/25/2026 CVE reserved 03/27/2026 +2 days Advisory disclosed 03/27/2026 +0 days VulDB entry created 03/27/2026 +0 days VulDB entry last update Sourcesinfo Advisory: buffalo.jp Status: Confirmed CVE: CVE-2026-27650 (🔒) GCVE (CVE): GCVE-0-2026-27650 GCVE (VulDB): GCVE-100-353820 Entryinfo Created: 03/27/2026 07:31 Changes: 03/27/2026 07:31 (73) Complete: 🔍 Cache ID: 99:6BD:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸