What is the CVSS score of CVE-2026-24103?

CVE-2026-24103 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of Ac15 Firmware are affected by CVE-2026-24103?

A critical buffer overflow vulnerability (CVSS 9.8) affects Tenda AC15 routers, allowing unauthenticated remote code execution with no available patch.

Is there a public PoC exploit available for CVE-2026-24103?

Yes, a public proof-of-concept exploit is available for CVE-2026-24103. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2026-24103?

Within 24 hours: Inventory all Tenda AC15V1.0 devices running V15.03.05.18_multi firmware and isolate affected units from production networks if business-critical. Within 7 days: Implement network segmentation to restrict admin access to these devices, disable the goform/formSetMacFilterCfg function via firewall rules if accessible remotely, and block external access to affected devices. Within 30 days: Replace vulnerable Tenda AC15 units with patched alternatives from vendors with confirmed security updates, or retire devices if replacement is not feasible.

Ac15 Firmware CVE-2026-24103

CRITICAL

Classic Buffer Overflow (CWE-120)

2026-03-03 cve@mitre.org

Buffer Overflow Ac15 Firmware

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:05 vuln.today

PoC Detected

Mar 05, 2026 - 21:43 vuln.today

Public exploit code

CVE Published

Mar 03, 2026 - 15:16 nvd

CRITICAL 9.8

DescriptionCVE.org

A buffer overflow vulnerability was discovered in goform/formSetMacFilterCfg in Tenda AC15V1.0 V15.03.05.18_multi.

AnalysisAI

Buffer overflow in Tenda AC15V1.0 via formSetMacFilterCfg. PoC available.

Unlock full vulnerability intelligence

Risk assessment & exploitation conditions
Attack chain visualization
Remediation with exact patch versions
Threat intelligence from 22 sources
Personal watchlist & email alerts

Continue with Google Continue with GitHub

Free forever · No credit card required

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access

Send crafted HTTP POST request to goform/formSetMacFilterCfg

Exploit

Trigger buffer overflow in MAC filter configuration parser

Impact

Execute arbitrary code with device privileges

Access

Send crafted HTTP POST request to goform/formSetMacFilterCfg

Exploit

Trigger buffer overflow in MAC filter configuration parser

Impact

Execute arbitrary code with device privileges

Vulnerability AssessmentAI

Exploitation	No special conditions — remote unauthenticated exploitation against Tenda AC15V1.0 running firmware V15.03.05.18_multi with default web interface enabled on port 80/443. Additional conditions and limiting factors are described in the full assessment.
Risk Assessment	CVSS 9.8. Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	Overflow via MAC filter configuration.
Remediation	Update firmware. Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: Inventory all Tenda AC15V1.0 devices running V15.03.05.18_multi firmware and isolate affected units from production networks if business-critical. …

Threat intelligence, references, and detailed analysis are available after sign-in.

CVE-2026-24103 vulnerability details – vuln.today

Back

Ac15 Firmware CVE-2026-24103

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Unlock full vulnerability intelligence

Attack ChainAIDerived

Vulnerability AssessmentAI

Recommended ActionAI

Share

External POC / Exploit Code