What is the CVSS score of CVE-2026-24115?

CVE-2026-24115 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 W20e Firmware are affected by CVE-2026-24115?

A critical remote code execution vulnerability exists in Tenda W20E routers (V4.0br_V15.11.0.6) with active public exploits and no vendor patch available.

Is there a public PoC exploit available for CVE-2026-24115?

Yes, a public proof-of-concept exploit is available for CVE-2026-24115. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2026-24115?

Within 24 hours: Inventory all Tenda W20E V4.0br_V15.11.0.6 devices and isolate critical ones from production networks if possible. Within 7 days: Implement network segmentation to restrict router access, disable remote administration interfaces, and monitor for exploitation attempts. Within 30 days: Replace affected devices with patched alternative models from other vendors or await vendor patch release with verification testing.

W20e Firmware CVE-2026-24115

CRITICAL

Classic Buffer Overflow (CWE-120)

2026-03-02 cve@mitre.org

Buffer Overflow W20e 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 - 21:55 vuln.today

PoC Detected

Mar 03, 2026 - 21:15 vuln.today

Public exploit code

CVE Published

Mar 02, 2026 - 15:16 nvd

CRITICAL 9.8

DescriptionCVE.org

An issue was discovered in Tenda W20E V4.0br_V15.11.0.6. Failure to validate the sizes of gstup and gstdwn before concatenating them into gstruleQos may lead to buffer overflow.