Cyber Resilience

CVE-2024-40503

MediumPublic PoC

Published: 16 July 2024

Published
16 July 2024
Modified
07 July 2025
KEV Added
Patch
CVSS Score v3.1 6.5 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0091 76.3th percentile
Risk Priority 14 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2024-40503 is a medium-severity Improper Verification of Source of a Communication Channel (CWE-940) vulnerability in Tenda Ax12 Firmware. Its CVSS base score is 6.5 (Medium).

Operationally, ranked in the top 23.7% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

An issue in Tenda AX12 v.16.03.49.18_cn+ allows a remote attacker to cause a denial of service via the Routing functionality and ICMP packet handling.

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

tenda
ax12 firmware
16.03.49.18_cn

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-940

Enforces verification of the source of a communication channel by requiring identification and authentication of services first.

addresses: CWE-940

Requires explicit verification of the source and integrity of the channel used for authentication and other security functions.

addresses: CWE-940

Provides the means to verify the source of name-resolution responses instead of relying on unauthenticated channels.

addresses: CWE-940

Requires explicit verification of the communication source, blocking session hijacking via spoofed or alternate channels.

References