CVE-2020-27153

Advisory lineage Upstream: 0 Downstream: 13
Modified
Published: 15 Oct 2020, 02:53
Last modified:15 Apr 2026, 21:08

Vulnerability Summary

Overall Risk (default)
medium
35/100
CVSS Score
8.6 HIGH
v3.1 (nvd)
EPSS Score
2.25% LOW
2% probability +0.35%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

15 Oct 2020, 02:53
Published
Vulnerability first disclosed
15 Apr 2026, 21:08
Last Modified
Vulnerability information updated

Description

In BlueZ before 5.55, a double free was found in the gatttool disconnect_cb() routine from shared/att.c. A remote attacker could potentially cause a denial of service or code execution, during service discovery, due to a redundant disconnect MGMT event.

CVSS Metrics

  • v3.1•HIGH•Score: 8.6CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
  • v2.0•HIGH•Score: 7.5AV:N/AC:L/Au:N/C:P/I:P/A:P

EPSS Trends

Current EPSS score: 2.25%• Percentile: 85%

Techniques & Countermeasures

  • CWE-415•Double Free

    The product calls free() twice on the same memory address.

Affected Systems

  • bluez•bluez

    < 5.55

  • debian•debian_linux

    9.0 | 10.0

  • opensuse•leap

    15.1 | 15.2

References (8)