What’s Vulnerable › Vulnerabilities

CVE-2020-12140

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-12-07 · updated 2026-06-17
• Weakness: CWE-120

Description

A buffer overflow in os/net/mac/ble/ble-l2cap.c in the BLE stack in Contiki-NG 4.4 and earlier allows an attacker to execute arbitrary code via malicious L2CAP frames.

Affected products

• contiki-ng: through 4.4

References

• https://github.com/contiki-ng/contiki-ng/pull/1662
• https://twitter.com/ScepticCtf
• https://github.com/contiki-ng/contiki-ng/pull/1662
• https://twitter.com/ScepticCtf

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