What is the CVSS score of CVE-2026-1222?

CVE-2026-1222 has a CVSS 3.1 base score of 7.2 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.3%.

How to fix or mitigate CVE-2026-1222?

Within 7 days: Identify all affected systems and apply vendor patches promptly. Review file handling controls and restrict upload directories.

CVE-2026-1222

HIGH

Unrestricted Upload of File with Dangerous Type (CWE-434)

2026-01-20 twcert@cert.org.tw

File Upload RCE

7.2

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.2 HIGH

AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

CVE Published

Jan 20, 2026 - 07:15 nvd

HIGH 7.2

DescriptionCVE.org

PrismX MX100 AP controller developed by BROWAN COMMUNICATIONS has an Arbitrary File Upload vulnerability, allowing privileged remote attackers to upload and execute web shell backdoors, thereby enabling arbitrary code execution on the server.

AnalysisAI

Remote code execution in BROWAN COMMUNICATIONS PrismX MX100 AP controller allows high-privileged remote attackers to upload arbitrary files and execute web shell backdoors without user interaction. This vulnerability affects administrators with elevated credentials and enables complete compromise of the affected access point. No patch is currently available to remediate this issue.

Technical ContextAI

Classified as CWE-434 (Unrestricted Upload of File with Dangerous Type). PrismX MX100 AP controller developed by BROWAN COMMUNICATIONS has an Arbitrary File Upload vulnerability, allowing privileged remote attackers to upload and execute web shell backdoors, thereby enabling arbitrary code execution on the server.

Affected ProductsAI

PrismX MX100 AP controller developed by BROWAN COMMUNICATIONS has an Arbitrary File Upload vulnerability, allowing privileged remote attackers to uplo

RemediationAI

Monitor vendor advisories for a patch. Validate file types by content. Store uploads outside web root. Restrict network access to the affected service where possible.