Medium severity6.5NVD Advisory· Published Sep 12, 2024· Updated Jun 17, 2026
CVE-2024-42483
CVE-2024-42483
Description
ESP-NOW Component provides a connectionless Wi-Fi communication protocol. An replay attacks vulnerability was discovered in the implementation of the ESP-NOW because the caches is not differentiated by message types, it is a single, shared resource for all kinds of messages, whether they are broadcast or unicast, and regardless of whether they are ciphertext or plaintext. This can result an attacker to clear the cache of its legitimate entries, there by creating an opportunity to re-inject previously captured packets. This vulnerability is fixed in 2.5.2.
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Affected products
3Patches
Vulnerability mechanics
References
2- github.com/espressif/esp-now/commit/4e30db50d541b2909d278ef0db05de1a3d7190efnvdPatch
- github.com/espressif/esp-now/security/advisories/GHSA-wf6q-c2xr-77xjnvdExploitThird Party Advisory
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