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CVE-2019-15894

MEDIUM
6.8
CVSS Score
Published: October 7, 2019 at 03:54 PM UTC
Updated: June 17, 2026 at 02:21 AM UTC
1 product affected across 1 vendorEsp Idf

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Severity
MEDIUM6.8
Exploit prediction
EPSS 0.4%

Description

An issue was discovered in Espressif ESP-IDF 2.x, 3.0.x through 3.0.9, 3.1.x through 3.1.6, 3.2.x through 3.2.3, and 3.3.x through 3.3.1. An attacker who uses fault injection to physically disrupt the ESP32 CPU can bypass the Secure Boot digest verification at startup, and boot unverified code from flash. The fault injection attack does not disable the Flash Encryption feature, so if the ESP32 is configured with the recommended combination of Secure Boot and Flash Encryption, then the impact is minimized. If the ESP32 is configured without Flash Encryption then successful fault injection allows arbitrary code execution. To protect devices with Flash Encryption and Secure Boot enabled against this attack, a firmware change must be made to permanently enable Flash Encryption in the field if it is not already permanently enabled.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Esp Idf· Espressif
95%
3.0 ≤ v < 3.0.93.3 ≤ v < 3.3.13.1 < v < 3.1.63.2 < v < 3.2.3
Affected range stops below 3.0.9, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.1.6, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.2.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.3.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_CONFIRMMitigationVendor Advisory
Source: [email protected]
https://www.espressif.com/en/news/Espressif_Security_Advisory_Concerning_Fault_Injection_and_Secure_Boot

CVSS

6.8MEDIUM[email protected]
Attack Vector
PHYSICAL
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-755

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