Cyber Resilience

CVE-2026-51843

Critical

Published: 19 June 2026

Published
19 June 2026
Modified
22 June 2026
KEV Added
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Patch
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CVSS Score v3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0036 28.3th percentile
Risk Priority 70 floored blend · peak EPSS

Summary

CVE-2026-51843 is a critical-severity Stack-based Buffer Overflow (CWE-121) vulnerability in Kdev (inferred from references). Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 28.3th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Tenda AC7 v15.03.06.44 contains a stack buffer overflow vulnerability in the /goform/AdvSetMacMtuWan interface via the wanMTU parameter.

CWE(s)
CWE-121

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
Why these techniques?

Stack buffer overflow in public web management interface (/goform) directly enables remote exploitation of a network device.

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

Affected Assets

Kdev
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inferred from references and description; NVD did not file a CPE for this CVE

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References