CVE-2019-17391
CVE-2019-17391 is a medium-severity vulnerability in Espressif Esp32-d0wd Firmware with a CVSS 3.x base score of 4.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-755.
Key facts
- Severity: Medium (CVSS 3.x base score 4.6)
- CVSS v2: 2.1
- EPSS exploit prediction: 0% (16th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-755
- Affected product: Espressif Esp32-d0wd Firmware
- Published:
- Last modified:
Description
An issue was discovered in the Espressif ESP32 mask ROM code 2016-06-08 0 through 2. Lack of anti-glitch mitigations in the first stage bootloader of the ESP32 chip allows an attacker (with physical access to the device) to read the contents of read-protected eFuses, such as flash encryption and secure boot keys, by injecting a glitch into the power supply of the chip shortly after reset.
Frequently asked questions
- What is CVE-2019-17391?
- An issue was discovered in the Espressif ESP32 mask ROM code 2016-06-08 0 through 2. Lack of anti-glitch mitigations in the first stage bootloader of the ESP32 chip allows an attacker (with physical access to the device) to read the contents of read-protected eFuses, such as flash encryption and secure boot keys, by injecting a glitch into the power supply of the chip shortly after reset.
- How severe is CVE-2019-17391?
- CVE-2019-17391 has a CVSS 3.x base score of 4.6, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
- Is CVE-2019-17391 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2019-17391?
- CVE-2019-17391 primarily affects Espressif Esp32-d0wd Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2019-17391?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2019-17391 published?
- CVE-2019-17391 was published on 2019-11-14 and last updated on 2026-06-17.
References
- https://www.espressif.com/en/news/Security_Advisory_Concerning_Fault_Injection_and_eFuse_Protections
Affected products (4)
- cpe:2.3:o:espressif:esp32-d0wd_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:espressif:esp32-d2wd_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:espressif:esp32-s0wd_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:espressif:esp32-pico-d4_firmware:-:*:*:*:*:*:*:*
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