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CVE-2023-4264

26
FAUCET Score

CVE-2023-4264 describes potential buffer overflow vulnerabilities within the Zephyr Bluetooth subsystem, affecting Zephyr Project's Zephyr operating system. This critical vulnerability, rated 9.6 CVSS, allows an adjacent attacker to achieve high impact on confidentiality, integrity, and availability without user interaction or privileges. Despite its severity, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.4.0CPE matchmatch criteria
cpe:2.3:o:zephyrproject:zephyr:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.1HIGH

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
2.8
Impact Score
3.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.90%
Probability of exploitation in next 30 days
EPSS Percentile
56.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0090 is in the 76th percentile among its peer group of 64 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.4 Bluesky, 0.2 Mastodon, and 1.3 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)

github_advisoryvendor investigatingvia nvd_reference
View patch

References

packetstormsecurity.com / files/175657/Zephyr-RTOS-3.x.0-Buffer-Overflows.html
Third Party Advisory
seclists.org / fulldisclosure/2023/Nov/1
Mailing ListThird Party Advisory
github.com / zephyrproject-rtos/zephyr/security/advisories/GHSA-rgx6-3w4j-gf5j
ExploitVendor Advisory
openwall.com / lists/oss-security/2023/11/07/1
Mailing List