CVE-2023-6881

FAUCET Score

CVE-2023-6881 is a critical buffer overflow vulnerability (CWE-120) in the is_mount_point function of Zephyr Project's Zephyr RTOS. With a CVSS score of 9.8, this vulnerability allows for unauthenticated, low-complexity network attacks leading to complete compromise of confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed in CISA's KEV catalog.

Impacted Technologies

Vendor	Product	Version(s)	CPE
		<= 3.5.0CPE matchmatch criteria	cpe:2.3:o:zephyrproject:zephyr::::::::

CVSS Data

CVSS version used by this source: 3.1

7.3HIGH

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

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

HIGH

Exploitability Score

2.5

Impact Score

4.7

CvssVersion

3.1

Exploit Intelligence

EPSS Score

0.44%

Probability of exploitation in next 30 days

EPSS Percentile

35.9%

Percentile rank of EPSS score among Peer Group

As of 2026-07-28

Model: v2026.06.15

This CVE's current EPSS score of 0.0044 is in the 13th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference

View patch

References

github.com / zephyrproject-rtos/zephyr/security/advisories/GHSA-mh67-4h3q-p437

ExploitPatchVendor Advisory