CVE-2018-18440: denx u-boot
Modified
AliasesUBUNTU-CVE-2018-18440DEBIAN-CVE-2018-18440
Published 20-11-2018Last modified 05-08-2024
Vulnerability summary
CVE-2018-18440 is a high (CVSS 7.8) vulnerability in denx u-boot. EPSS estimates a 0.60% chance of exploitation in the next 30 days, higher than 47.8% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
7.8/10
010
High · v3.0 (NVD)EPSS score
0.60%
0%100%
Low · +0.02 pp in 30 daysKEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1reference
Timeline
- 20-11-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
DENX U-Boot through 2018.09-rc1 has a locally exploitable buffer overflow via a crafted kernel image because filesystem loading is mishandled.
CVSS metrics
4 scores · 3 sources · 2 versionsHigh 7.8Preferred score · NVD (NIST)
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
High 7.2Preferred score · NVD (NIST)
AV:L/AC:L/Au:N/C:C/I:C/A:CSourcesSingle source
EPSS trend
Probability
0.60%
Chance of exploitation in the next 30 days
Percentile
48%
Versus all other CVEs
30-day change
Increase +0.02 pp
From 0.57% on 22-09-2026
22-09-202622-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
1 foundExploit Reference (openwall.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Debian1 product
- u-bootAll versions (No fix recorded)
Denx1 product
- u-boot≤ 2018.07 | 2018.09:rc1
Ubuntu1 product
- u-bootAll versions (No fix recorded)
3 vendors · 3 products
References
6 links- www.openwall.com/lists/oss-security/2018/11/02/2Mailing ListX Refsource MLISTExploitMitigationThird Party Advisory
- cert-portal.siemens.com/productcert/pdf/ssa-618620.pdfX Refsource CONFIRM
