Vulnerability in Espressif Esp32
CVE-2020-13595
The Bluetooth Low Energy (BLE) controller implementation in Espressif ESP-IDF 4.0 through 4.2 (for ESP32 devices) returns the wrong number of completed BLE packets and triggers a reachable assertion on the host stack when receiving a packet with an MIC failure. An attacker within radio range can silently trigger the assertion (which disables the target's BLE stack) by sending a crafted sequence of BLE packets.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.009 (57.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- asset-group.github.io/disclosures/sweyntooth/ (Third Party Advisory)
- asset-group.github.io/cves.html (Third Party Advisory)
- github.com/espressif/esp32-bt-lib (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-13595?
- CVE-2020-13595 is a medium-severity vulnerability in Espressif Esp32, classified under Reachable Assertion. CVSS score: 6.5/10. Published 2020-08-31.
- How severe is CVE-2020-13595?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2020-13595 known to be exploited?
- 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.