CVE-2020-27153

Name: CVE-2020-27153
Creator: NVD / NIST
Published: 2020-10-15T03:15:12.12+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.6/10EPSS 4.07%

Last modified Jun 17, 2026

CVE-2020-27153 is a high-severity vulnerability rated 8.6/10 on the CVSS scale. 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.. EPSS estimates a 4.07% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

8.6/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

EPSS Probability

4.07%

89.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Bluez	Bluez	< 5.55
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0
Opensuse	Leap	15.1
Opensuse	Leap	15.2

References

http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00034.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00036.htmlMailing List, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1884817Issue Tracking, Third Party Advisory
https://github.com/bluez/bluez/commit/1cd644db8c23a2f530ddb93cebed7dacc5f5721aPatch, Third Party Advisory
https://github.com/bluez/bluez/commit/5a180f2ec9edfacafd95e5fed20d36fe8e077f07Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/10/msg00022.htmlMailing List, Third Party Advisory
https://security.gentoo.org/glsa/202011-01Third Party Advisory
https://www.debian.org/security/2021/dsa-4951Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00034.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00036.htmlMailing List, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1884817Issue Tracking, Third Party Advisory
https://github.com/bluez/bluez/commit/1cd644db8c23a2f530ddb93cebed7dacc5f5721aPatch, Third Party Advisory
https://github.com/bluez/bluez/commit/5a180f2ec9edfacafd95e5fed20d36fe8e077f07Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/10/msg00022.htmlMailing List, Third Party Advisory
https://security.gentoo.org/glsa/202011-01Third Party Advisory
https://www.debian.org/security/2021/dsa-4951Third Party Advisory

Timeline

Published: Oct 15, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-27153?

How severe is CVE-2020-27153?

CVE-2020-27153 has a CVSS score of 8.6/10 (HIGH severity). The EPSS model estimates a 4.07% probability of exploitation in the next 30 days.

How do I fix CVE-2020-27153?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-27153?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST