What is the CVSS score of CVE-2026-2148?

CVE-2026-2148 has a CVSS 3.1 base score of 5.3 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N. EPSS exploitation probability: 0.0%.

Which versions of Ac21 Firmware are affected by CVE-2026-2148?

Organizations using A security vulnerability should be aware of moderate risk from CVE-2026-2148, a information exposure vulnerability rated CVSS 5.3.

Is there a public PoC exploit available for CVE-2026-2148?

Yes, a public proof-of-concept exploit is available for CVE-2026-2148. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-2148?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Review data exposure and access controls.

Ac21 Firmware CVE-2026-2148

MEDIUM

Information Exposure (CWE-200)

2026-02-08 cna@vuldb.com

Information Disclosure Tenda Ac21 Firmware

5.3

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.3 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

PoC Detected

Feb 10, 2026 - 18:51 vuln.today

Public exploit code

CVE Published

Feb 08, 2026 - 11:15 nvd

MEDIUM 5.3

DescriptionCVE.org

A security vulnerability has been detected in Tenda AC21 16.03.08.16. Affected is an unknown function of the file /cgi-bin/DownloadFlash of the component Web Management Interface. The manipulation leads to information disclosure. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used.

AnalysisAI

Tenda AC21 firmware version 16.03.08.16 contains an information disclosure vulnerability in the /cgi-bin/DownloadFlash web management interface that allows unauthenticated remote attackers to access sensitive data. Public exploit code exists for this vulnerability, and no patch is currently available, leaving affected devices at risk of data exposure.

Technical ContextAI

Classified as CWE-200 (Information Exposure). Affects Ac21 Firmware. A security vulnerability has been detected in Tenda AC21 16.03.08.16. Affected is an unknown function of the file /cgi-bin/DownloadFlash of the component Web Management Interface. The manipulation leads to information disclosure. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used.