🛡️ CVE-2026-45542
🟠 CVSS 7.1 — High ✅ No Known Exploit CWE-122 NVD
7.1
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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 heap buffer overflow exists in the Security Scheme 2 (SRP6a) session-setup path of the protocomm component. The first-phase handler (handle_session_command0() in components/protocomm/src/security/security2.c) trusts the length of a client-supplied protobuf field for the SRP6a username and copies it into a buffer whose size is derived from a narrower destination type. The resulting truncation-versus-copy asymmetry corrupts the heap when an oversized value is supplied. This issue has been patched in versions 5.2.7, 5.3.6, 5.4.5, 5.5.5, and 6.0.1.

Details

Severity HIGH
CVSS Score 7.1
CVSS Vector CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
CWE CWE-122
Public Exploit ✅ No
Source NVD
Published 2026-06-10
Updated 2026-06-12
Modified 2026-06-11

Affected Packages

Software From version Fixed in
esp-idf — —
unknown — —

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