GHSA-4H3H-63V6-88QX ESPHome vulnerable to denial-of-service via out-of-bounds check bypass in the API component

Summary An integer overflow in the API component's protobuf decoder allows denial-of-service attacks when API encryption is not used. Details The bounds check ptr + fieldlength end in components/api/proto.cpp can overflow when a malicious client sends a large fieldlength value. This affects all...

CVE-2026-23833

A flaw was found in ESPHome. An integer overflow vulnerability exists in the API component's protobuf decoder. A remote attacker can exploit this by sending a specially crafted, large fieldlength value, which bypasses a bounds check. This can lead to a denial-of-service DoS condition, causing the...

MiracleLinux 9 : protobuf-3.14.0-13.el9 (AXSA:2022-4552:03)

The remote MiracleLinux 9 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2022-4552:03 advisory. protobuf: Incorrect parsing of nullchar in the proto symbol leads to Nullptr dereference CVE-2021-22570 Tenable has extracted the preceding description block...

MiracleLinux 8 : protobuf-c-1.3.0-8.el8 (AXSA:2023-7095:03)

The remote MiracleLinux 8 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2023-7095:03 advisory. protobuf-c: unsigned integer overflow in parserequiredmember CVE-2022-48468 Tenable has extracted the preceding description block directly from the...

MiracleLinux 8 : protobuf-3.5.0-15.el8 (AXSA:2022-4144:02)

The remote MiracleLinux 8 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2022-4144:02 advisory. protobuf: Incorrect parsing of nullchar in the proto symbol leads to Nullptr dereference CVE-2021-22570 Tenable has extracted the preceding description block...

MiracleLinux 8 : container-tools:rhel8 (AXSA:2024-8553:01)

The remote MiracleLinux 8 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2024-8553:01 advisory. The container-tools module contains tools for working with containers, notably podman, buildah, skopeo, and runc. Security Fixes: golang-protobuf:...

MiracleLinux 9 : skopeo-1.14.3-2.el9 (AXSA:2024-8078:02)

The remote MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2024-8078:02 advisory. golang-protobuf: encoding/protojson, internal/encoding/json: infinite loop in protojson.Unmarshal when unmarshaling certain forms of invalid JSON...

MiracleLinux 9 : protobuf-c-1.3.3-13.el9 (AXSA:2023-6666:02)

The remote MiracleLinux 9 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2023-6666:02 advisory. protobuf-c: unsigned integer overflow in parserequiredmember CVE-2022-48468 Tenable has extracted the preceding description block directly from the...

Integer Overflow or Wraparound

Overview esphome is a Make creating custom firmwares for ESP32/ESP8266 super easy. Affected versions of this package are vulnerable to Integer Overflow or Wraparound via the protobuf decoder in the API component. An attacker can cause the device to read invalid memory and crash by sending a...

CVE-2026-23833

ESPHome is a system to control microcontrollers remotely through Home Automation systems. In versions 2025.9.0 through 2025.12.6, an integer overflow in the API component's protobuf decoder allows denial-of-service attacks when API encryption is not used. The bounds check ptr + fieldlength end in...

CVE-2026-23833 ESPHome vulnerable to denial-of-service via out-of-bounds check bypass in the API component

ESPHome is a system to control microcontrollers remotely through Home Automation systems. In versions 2025.9.0 through 2025.12.6, an integer overflow in the API component's protobuf decoder allows denial-of-service attacks when API encryption is not used. The bounds check ptr + fieldlength end in...

CVE-2026-23833

Summary: CVE-2026-23833 affects ESPHome 2025.9.0–2025.12.6. A flaw in the API component’s protobuf decoder lets an attacker perform a denial-of-service by sending a large field_length, causing an overflow of the bounds check in components/api/proto.cpp (ptr + field_length > end). This can cras...

CVE-2026-23833 ESPHome vulnerable to denial-of-service via out-of-bounds check bypass in the API component

ESPHome is a system to control microcontrollers remotely through Home Automation systems. In versions 2025.9.0 through 2025.12.6, an integer overflow in the API component's protobuf decoder allows denial-of-service attacks when API encryption is not used. The bounds check ptr + fieldlength end in...

PT-2026-3475

Name of the Vulnerable Software and Affected Versions ESPHome versions 2025.9.0 through 2025.12.6 Description ESPHome is a system for remote microcontroller control via Home Automation systems. An integer overflow in the API component’s protobuf decoder can lead to denial-of-service attacks when...

ESPHome Input Validation Vulnerability

ESPHome is an open-source system for configuring and managing smart hardware. It is used to control Esp8266/Esp32 hardware, enabling home automation control. The version 2025.9.0 to 2025.12.6 of ESPHome contains a vulnerability related to input validation errors. This vulnerability stems from...

Allocation of Resources Without Limits or Throttling

Overview google/protobuf is a proto library for PHP Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling due to missing validation in the readRaw function in the CodedInputStream class. An attacker can exhaust all PHP workers and cause denial of...

Security Bulletin: Vulnerability in protobuf-c affects IBM Netezza Appliance

Summary The protobuf-c package is used by IBM Netezza Appliance . IBM Netezza Appliance has addressed the applicable CVE CVE-2022-48468 Vulnerability Details CVEID:CVE-2022-48468 DESCRIPTION: protobuf-c before 1.4.1 has an unsigned integer overflow in parserequiredmember. CWE:CWE-190: Integer...

MiracleLinux 9 : protobuf-3.14.0-16.el9 (AXSA:2025-10141:01)

The remote MiracleLinux 9 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2025-10141:01 advisory. protobuf: message parsing vulnerability in ProtocolBuffers CVE-2022-1941 Tenable has extracted the preceding description block directly from the MiracleLinu...

CoreDNS gRPC/HTTPS/HTTP3 servers lack resource limits, enabling DoS via unbounded connections and oversized messages

Multiple CoreDNS server implementations gRPC, HTTPS, and HTTP/3 lack critical resource-limiting controls. An unauthenticated remote attacker can exhaust memory and degrade or crash the server by opening many concurrent connections, streams, or sending oversized request bodies. The issue is simila...

PT-2026-4468

Name of the Vulnerable Software and Affected Versions google.protobuf affected versions not specified Description A denial-of-service DoS issue exists in the ParseDict function within google.protobuf.json format in Python. The vulnerability occurs because the max recursion depth limit can be...