NULL pointer dereference in Espressif Esp-idf
CVE-2026-45541
ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In versions 5.2.6, 5.3.5, 5.4.4, 5.5.4, and 6.0, a NULL-pointer dereference exists in the WebSocket subprotocol-negotiation path of the esp_http_server component. Whi…
EPSS: 0.004 (35.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Espressif Esp-idf — versions 5.2.6, 5.5.4, 5.3.5
Weakness classification (CWE)
References
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (x_refsource_CONFIRM, Patch, Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-45541?
- CVE-2026-45541 is a high-severity vulnerability in Espressif Esp-idf, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2026-06-10.
- How severe is CVE-2026-45541?
- High severity. CVSS v3 base score is 7.5 out of 10.