Esp Idf
CVE-2025-55297
MEDIUM
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A06:2021 - Vulnerable and Outdated Components
ASVS 5.0
V15 - Secure Coding and Architecture Buffer copy size validation
MITRE ATT&CK
1 technique across 1 tactic: Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 5.2 (MEDIUM). Attack characteristics: adjacent network attack vector, low complexity, no privileges required, no user interaction not required. EPSS exploitation probability: 0.04%. |
| Exploit ScenarioDerived | An attacker could exploit this vulnerability to overflow a buffer to corrupt adjacent memory. No authentication is required to exploit this vulnerability. |
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Alert meAnalysisAIv1 – Mar 28, 2026
ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. Rated medium severity (CVSS 5.2), this vulnerability is no authentication required, low attack complexity. This Buffer Copy without Size Check vulnerability could allow attackers to overflow a buffer to corrupt adjacent memory.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Always validate buffer sizes before copy operations. Use bounded functions (strncpy, snprintf). Enable compiler protections.
Affects your stack
Find out whether the stacks and servers you run are on an affected version.
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as Buffer Copy without Size Check (CWE-120), which allows attackers to overflow a buffer to corrupt adjacent memory. ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. The BluFi example bundled in ESP-IDF was vulnerable to memory overflows in two areas: Wi-Fi credential handling and Diffie-Hellman key exchange. This vulnerability is fixed in 5.4.1, 5.3.3, 5.1.6, and 5.0.9. Affected products include: Espressif Esp-Idf.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U
Primary rating from GitHub Advisory · only source for this CVE.
CVSS VectorGitHub Advisory
Lifecycle Timeline
2DescriptionGitHub Advisory
ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. The BluFi example bundled in ESP-IDF was vulnerable to memory overflows in two areas: Wi-Fi credential handling and Diffie-Hellman key exchange. This vulnerability is fixed in 5.4.1, 5.3.3, 5.1.6, and 5.0.9.
Executive ViewAI
Organizations using ESF-IDF should be aware of moderate risk from CVE-2025-55297, a buffer overflow vulnerability rated CVSS 5.2. Exploitation could cause memory corruption or application crashes. A patch is available and should be applied during regular vulnerability management.
Apply vendor patch. If patching is delayed: enable ASLR/DEP, apply network segmentation.
Threat Intelligence Overview
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.
Affected Products (CPE)GitHub Advisory
Espressif Esp idf v5.3.0 is vulnerable to Insecure Permissions resulting in Authentication bypass. Rated high severity (
The EAP peer implementation in Espressif ESP-IDF 2.0.0 through 4.0.0 and ESP8266_NONOS_SDK 2.2.0 through 3.1.0 allows th
An encryption-bypass issue was discovered on Espressif ESP-IDF devices through 4.2, ESP8266_NONOS_SDK devices through 3.
Buffer Overflow vulnerability in esp-idf v.5.1 allows a remote attacker to execute arbitrary code via a crafted script t
The EAP peer implementation in Espressif ESP-IDF 2.0.0 through 4.0.0 and ESP8266_NONOS_SDK 2.2.0 through 3.1.0 processes
A security vulnerability in the ESP-NOW protocol implementation within the ESP Wi-Fi component of (CVSS 9.8). Critical s
Privilege escalation from REE to TEE in Espressif ESP-IDF 5.5.4 and 6.0 lets a low-privileged user-application caller ab
ESP-IDF is the official development framework for Espressif SoCs. Rated high severity (CVSS 8.8), this vulnerability is
The Bluetooth Classic implementation in Espressif ESP-IDF 4.4 and earlier does not properly restrict the Feature Page up
Buffer Overflow vulnerability in esp-idf v.5.1 allows a remote attacker to obtain sensitive information via the external
Denial of service in Espressif's ESP-IDF JPEG driver (versions 6.0.1, 5.5.4, 5.4.4, 5.3.5 and likely earlier) stems from
Remote denial-of-service in Espressif ESP-IDF's esp_http_server WebSocket handshake allows unauthenticated attackers to
GitHub PoC
Exploit-DB