How severe is CVE-2023-4260?

CVE-2023-4260 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2023-4260 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-4260?

CVE-2023-4260 affects Zephyrproject Zephyr. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-4260?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-4260 published?

CVE-2023-4260 was published on 2023-09-27 and last updated on 2026-06-17.

CVE-2023-4260

CVE-2023-4260 is a medium-severity vulnerability in Zephyrproject Zephyr with a CVSS 3.x base score of 6.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-120.

Key facts

Severity: Medium (CVSS 3.x base score 6.3)
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Zephyrproject Zephyr
Published: 2023-09-27
Last modified: 2026-06-17

Description

Potential off-by-one buffer overflow vulnerability in the Zephyr fuse file system.

Frequently asked questions

What is CVE-2023-4260?: Potential off-by-one buffer overflow vulnerability in the Zephyr fuse file system.
How severe is CVE-2023-4260?: CVE-2023-4260 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2023-4260 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-4260?: CVE-2023-4260 affects Zephyrproject Zephyr. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-4260?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-4260 published?: CVE-2023-4260 was published on 2023-09-27 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:zephyrproject:zephyr:*:*:*:*:*:*:*:*

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