CVE-2026-45542
HIGH
7,1
Source: [email protected]
Attack Vector: adjacent_network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: low
Availability: high
Description
AI Translation Available
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.
122
Heap-based Buffer Overflow
DraftCommon Consequences
Security Scopes Affected:
Availability
Integrity
Confidentiality
Access Control
Other
Potential Impacts:
Dos: Crash, Exit, Or Restart
Dos: Resource Consumption (Cpu)
Dos: Resource Consumption (Memory)
Execute Unauthorized Code Or Commands
Bypass Protection Mechanism
Modify Memory
Other
Applicable Platforms
Languages:
Memory-Unsafe, C, C++
https://github.com/espressif/esp-idf/commit/0ea58d79845ad674d0358d5de246015a68c…
https://github.com/espressif/esp-idf/commit/56c3e385611e63162d0f2f8504ac4ae2ccf…
https://github.com/espressif/esp-idf/commit/71eb2dbe6aaef830719ecac8edf409e2992…
https://github.com/espressif/esp-idf/commit/9b4cacf9cbc69379972de6a2247fcf5af92…
https://github.com/espressif/esp-idf/commit/a2f4554f10ba075c98cbc67464db096ba32…
https://github.com/espressif/esp-idf/commit/f5d24a7e919bc5f447091479656b86da676…
https://github.com/espressif/esp-idf/security/advisories/GHSA-9r76-858f-v6jh