CVE-2020-10648: denx u-boot Improper Input Validation
Modified
AliasesUBUNTU-CVE-2020-10648DEBIAN-CVE-2020-10648
Published 19-03-2020Last modified 12-05-2026
Vulnerability summary
CVE-2020-10648 is a high (CVSS 7.8) Improper Input Validation vulnerability in denx u-boot. EPSS estimates a 1.40% chance of exploitation in the next 30 days, higher than 72.2% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
7.8/10
010
High · v3.1 (NVD)EPSS score
1.40%
0%100%
Low · +0.01 pp in 30 daysKEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1reference
Advisory lineage
Upstream 0 · Downstream 8 · Related 8Timeline
- 19-03-2020PublishedVulnerability first disclosed.
- 12-05-2026Last modifiedVulnerability information updated.
Description
Das U-Boot through 2020.01 allows attackers to bypass verified boot restrictions and subsequently boot arbitrary images by providing a crafted FIT image to a system configured to boot the default configuration.
CVSS metrics
4 scores · 3 sources · 2 versionsHigh 7.8Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Medium 6.8Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
1.40%
Chance of exploitation in the next 30 days
Percentile
72%
Versus all other CVEs
30-day change
Increase +0.01 pp
From 1.40% 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 (labs.f-secure.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Debian1 product
- u-boot< 2020.04+dfsg-1
Denx1 product
- u-boot< 2018.03 | 2020.01
Opensuse1 product
- leapEOL15.2
Ubuntu1 product
- u-bootAll versions (No fix recorded) | < 2020.10+dfsg-1ubuntu0~18.04.2 | < 2021.01+dfsg-3ubuntu0~20.04.3
4 vendors · 4 products
References
8 links- www.openwall.com/lists/oss-security/2020/03/18/5X Refsource MISCREPORTMailing ListThird Party Advisory
- labs.f-secure.com/advisories/das-u-boot-verified-boot-bypass/X Refsource MISCREPORTExploitThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-11/msg00030.htmlVendor AdvisoryX Refsource SUSEThird Party Advisory
