🛡️ CVE-2023-4260 — zephyr

🟡 CVSS 6.3 — Medium ⚠️ Exploit Public CWE-120 NVD
6.3
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality low, integrity low, availability low.

Weakness class

CVE-2023-4260 is classified as CWE-120: Classic Buffer Overflow. Input is copied into a fixed-size buffer without a length check, overwriting memory past the end of it.

Affected software

CVE-2023-4260 is recorded against 1 package.

  • zephyr (fixed in 3.4.0)

Timeline and source

Published on 27 September 2023 and last revised on 17 June 2026. A public exploit is known to exist, which raises the urgency of patching considerably. Record sourced from NVD.

References

packetstormsecurity.com
seclists.org
www.openwall.com
github.com
packetstormsecurity.com
seclists.org
www.openwall.com
github.com

Details

Severity MEDIUM
CVSS Score 6.3
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L
CWE CWE-120
Public Exploit ⚠️ Yes
Source NVD
Published 2023-09-27
Updated 2026-08-11
Modified 2026-06-17
Fix URL N/A

Affected Packages

Software From version Fixed in
zephyr — 3.4.0

Similar Threats

Exploit Protection

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CVE-2023-4260 carries CVSS 6.3 Medium rating and a public exploit already exists. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.

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