CVE-2018-20378

7.5 highEPSS 2.3%

The L2CAP signaling channel implementation and SDP server implementation in OpenSynergy Blue SDK 3.2 through 6.0 allow remote, unauthenticated attackers to execute arbitrary code or cause a denial of service via malicious L2CAP configuration requests, in conjunction with crafted SDP communication over maliciously configured L2CAP channels. The attacker must have connectivity over the Bluetooth physical layer, and must be able to send raw L2CAP frames. This is related to L2Cap_HandleConfigReq in core/stack/l2cap/l2cap_sm.c and SdpServHandleServiceSearchAttribReq in core/stack/sdp/sdpserv.c.

Severity

CVSS 3.0

7.5 high

CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 2.3% chance of exploitation in the next 30 days; higher than 82% of CVEs (scores of 2026-10-31)
CWE: CWE-20
Published: 2019-03-29
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

opensynergy:blue_sdk

References

https://www.cymotive.com/wp-content/uploads/2019/03/Hell2CAP-0day.pdf
https://www.opensynergy.com/news/security/bluesdk-advisory2018003/
https://www.cymotive.com/wp-content/uploads/2019/03/Hell2CAP-0day.pdf
https://www.opensynergy.com/news/security/bluesdk-advisory2018003/

Check your stack JSON