CVE-2018-18439

9.8 criticalEPSS 2.0%

Critical (9.8) in denx u-boot. EPSS 2.0% chance of exploitation in the next 30 days.

DENX U-Boot through 2018.09-rc1 has a remotely exploitable buffer overflow via a malicious TFTP server because TFTP traffic is mishandled. Also, local exploitation can occur via a crafted kernel image.

Severity

CVSS 3.1

9.8 critical

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

EPSS: 2.0% chance of exploitation in the next 30 days; higher than 81% of CVEs (scores of 2026-10-31)
CWE: CWE-119
Published: 2018-11-20
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

denx:u-boot

References

http://www.openwall.com/lists/oss-security/2018/11/02/2
http://www.openwall.com/lists/oss-security/2018/11/02/2

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