CVE-2020-13593

HIGH 8.8CVE-2020-13593 · Published 31/08/2020 · updated 17/06/2026

In short

CVE-2020-13593 is a HIGH (CVSS 8.8) vulnerability affecting simplelink-cc2640r2 software development kit (ti).
Chance of exploitation in the next 30 days (EPSS): 0.26%, higher than 17.4% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
simplelink-cc2640r2 software development kit ti	`≤ 2.2.3`	No fix yet

Description

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).

References

ti.com/tool/BLE-STACK · Vendor Advisory
asset-group.github.io/cves.html · Third Party Advisory
asset-group.github.io/disclosures/sweyntooth · Third Party Advisory

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