Vulnerability in Ti Simplelink-Cc2640r2 Software Development Kit
CVE-2020-13593
The Bluetooth Low Energy Secure Manager Protocol (SMP) implementation in Texas Instruments SimpleLink SIMPLELINK-CC2640R2-SDK through 2.2.3 allows the Diffie-Hellman check during the Secure Connection pairing to be skipped if the Link Layer encryption setup is performed earlier. An attacker in radio range can achieve arbitrary read/write access to protected GATT service data, cause a denial of service, or possibly control a device's function by establishing an encrypted session with an unauthenticated Long Term Key (LTK).
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (15.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 15.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.ti.com/tool/BLE-STACK (Vendor Advisory)
- asset-group.github.io/disclosures/sweyntooth/ (Third Party Advisory)
- asset-group.github.io/cves.html (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-13593?
- CVE-2020-13593 is a high-severity vulnerability in Ti Simplelink-Cc2640r2 Software Development Kit, classified under Improper Verification of Cryptographic Signature. CVSS score: 8.8/10. Published 2020-08-31.
- How severe is CVE-2020-13593?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2020-13593 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.