CVE intelligence and bounded remediation

CVE-2023-35818 — An issue was discovered on Espressif ESP32 3.0 (ESP32_rev300 ROM) devices

Medium CVSS 6.8

An issue was discovered on Espressif ESP32 3.0 (ESP32_rev300 ROM) devices. An EMFI attack on ECO3 provides the attacker with a capability to influence the PC value at the CPU context level, regardless of Secure Boot and Flash Encryption status. By using this capability, the attacker can exploit another behavior in the chip to gain unauthorized access to the ROM download mode. Access to ROM download mode may be further exploited to read the encrypted flash content in cleartext format or execute stub code.

Severity
Medium
CVSS
6.8 (3.1)
Published
2023-07-17
CISA KEV
Not currently listed
Ecosystem
operating-system

Affected products

  • espressif / esp32-d0wd-v3_firmware / 3.0
  • espressif / esp32-d0wd-v3_firmware / 3.1
  • espressif / esp32-d0wdr2-v3_firmware / 3.0
  • espressif / esp32-d0wdr2-v3_firmware / 3.1
  • espressif / esp32-u4wdh_firmware / 3.0
  • espressif / esp32-u4wdh_firmware / 3.1

Showing 6 representative product identities from 44 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

General vulnerability remediation

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Confirm the affected component, deployment paths, reachable interfaces, and enabled features from inventories and configuration, without probing production destructively.
  • Compare the advisory's affected conditions with the repository lockfiles, build manifests, artifacts, and runtime inventory.
  • Identify data sensitivity, trust boundaries, and privilege level for every confirmed affected deployment.

Remediate safely

  • Apply a vendor-supported fix or remove the affected component or feature; record the selected change and its source in the repository.
  • Update direct and transitive dependency locks, generated artifacts, deployment manifests, and asset inventories together.
  • Add a regression test for the documented unsafe condition using inert inputs and preserve rollback instructions.

Authoritative sources

Complete CVE record and remediation plan

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