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No exploitation reportedFix available

CVE-2018-18439

No exploitation reported by the sources we read.

  • Published2018-11-20
  • Fixed in2018.09
  • WeaknessCWE-119

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC
  1. 2018-11-2019:29CVE publishedNVD

Versions per branch

NVD
Denx u-boot
BranchAffectedFixed in
2018.9< 2018.092018.09
2018.9= 2018.09no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • u-bootUbuntu:Pro:16.04:LTSall versions · no fixed version listed
  • u-bootDebian:14all versions · no fixed version listed
  • u-bootDebian:13all versions · no fixed version listed
  • u-bootDebian:12all versions · no fixed version listed

Full record on NVD

Fix

  1. Update Denx u-boot to 2018.09

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2018-11-20
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-vqxq-jmxf-f53r

Frequently asked questions

What is CVE-2018-18439?

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.

Is CVE-2018-18439 actively exploited?

Active exploitation of CVE-2018-18439 has not been confirmed. Its EPSS score was 2.0% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-18439?

CVE-2018-18439 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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