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CVE-2019-8921

17
FAUCET Score

CVE-2019-8921 is a medium-severity vulnerability in BlueZ through version 5.48, affecting various Linux distributions including Debian. It allows an attacker to leak arbitrary heap data due to improper handling of SVC_ATTR_REQ in the SDP implementation. An attacker can craft a malicious CSTATE to trick the server into returning more data than its buffer can hold. The vulnerability has a CVSS score of 6.5 (MEDIUM) with an attack vector of adjacent network and high confidentiality impact. There is no known active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 5.48CPE matchmatch criteria
cpe:2.3:a:bluez:bluez:*:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.94%
Probability of exploitation in next 30 days
EPSS Percentile
57.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0094 is in the 87th percentile among its peer group of 1,802 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: bluez

Vendor Advisories (1)

redhatCVE-2019-8921Moderate

bluez: information leak in service_attr_req() in sdpd-request.c via a crafted CSTATE

Feb 25, 2019

References

lists.debian.org / debian-lts-announce/2022/10/msg00026.html
Mailing ListThird Party Advisory
security.netapp.com / advisory/ntap-20211203-0002
Third Party Advisory
ssd-disclosure.com / ssd-advisory-linux-bluez-information-leak-and-heap-overflow
ExploitPatchThird Party Advisory