CVE-2025-52471
CVSS v3
9.8
CRITICAL
EPSS Score
1.7 %
exploit probability
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. An integer underflow vulnerability has been identified in the ESP-NOW protocol implementation within the ESP Wi-Fi component of versions 5.4.1, 5.3.3, 5.2.5, and 5.1.6 of the ESP-IDF framework. This issue stems from insufficient validation of user-supplied data length in the packet receive function. Under certain conditions, this may lead to out-of-bounds memory access and may allow arbitrary memory write operations. On sys
Technical details
- CVSS v3 Vector
- 3.1
- Published
- 2025-06-24
- Last Modified
- 2026-06-17
Frequently asked questions
What is CVE-2025-52471?
ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. An integer underflow vulnerability has been identified in the ESP-NOW protocol implementation within the ESP Wi-Fi component of versions 5.4.1, 5.3.3, 5.2.5, and 5.1.6 of the ESP-IDF framework. This issue stems from insufficient validation of user-supplied data length in the packet receive function. Under certain conditions, this may lead to out-of-bounds memory access and may allow arbitrary memory write operations. On sys
Is CVE-2025-52471 actively exploited?
Active exploitation of CVE-2025-52471 has not been confirmed. The EPSS score is 1.7%, indicating the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2025-52471?
CVE-2025-52471 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string 3.1.
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