CVE-2026-45541
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
ESF-IDF: Remote Null Pointer Dereference in WebSocket Server
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. While parsing the client-supplied Sec-WebSocket-Protocol request header during the WebSocket handshake, the tokenisation result is dereferenced without a NULL check, so a malformed header value can crash the server before any application-level authentication runs. This issue has been patched in versions 5.2.7, 5.3.6, 5.4.5, 5.5.5, and 6.0.1.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
esp-idf
- Vendor
- espressif
- Product
- esp-idf
- Platforms
- Unknown
- Default status
Unknown
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| = 6.0 | affected | Unavailable | Unavailable | Unavailable | None listed |
| = 5.5.4 | affected | Unavailable | Unavailable | Unavailable | None listed |
| = 5.4.4 | affected | Unavailable | Unavailable | Unavailable | None listed |
| = 5.3.5 | affected | Unavailable | Unavailable | Unavailable | None listed |
| = 5.2.6 | affected | Unavailable | Unavailable | Unavailable | None listed |