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Permalink CVE-2026-45542
7.1 HIGH
  • CVSS version (CVSS): 3.1
  • Attack Vector (AV): Adjacent (A)
  • Attack Complexity (AC): Low (L)
  • Privileges Required (PR): None (N)
  • User Interaction (UI): None (N)
  • Scope (S): Unchanged (U)
  • Confidentiality (C): None (N)
  • Integrity (I): Low (L)
  • Availability (A): High (H)
  • Modified Attack Vector (MAV): Adjacent (A)
  • Modified Attack Complexity (MAC): Low (L)
  • Modified Privileges Required (MPR): None (N)
  • Modified User Interaction (MUI): None (N)
  • Modified Confidentiality (MC): None (N)
  • Modified Scope (MS): Unchanged (U)
  • Modified Integrity (MI): Low (L)
  • Modified Availability (MA): High (H)
updated 1 week, 2 days ago by @LeSuisse Activity log
  • Created suggestion
  • @LeSuisse dismissed (not in Nixpkgs)
ESF-IDF: Heap buffer overflow in protocomm Security2 over Bluetooth

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.

Affected products

esp-idf
  • === 5.5.4
  • === 5.4.4
  • === 5.2.6
  • === 6.0
  • === 5.3.5

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