An issue was discovered in Das U-Boot through 2019.07.
An issue was discovered in Das U-Boot through 2019.07. There is a stack-based buffer overflow in this nfs_handler reply helper function: nfs_lookup_reply.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for help- Published
- Jul 31, 2019
- Updated
- Jun 16, 2026
- EPSS
- 2.6% · 85th percentile
- CWE
- CWE-787
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Report tools
Action score
40
Plan
Add it to your regular patch cycle.
- CVSS
- 39 / 40 · 9.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 2.6%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| denx | u-boot | cpe:2.3:a:denx:u-boot |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- denx u-bootup to 2019.07 inclusive
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | u-boot | before 2020.01+dfsg-1 | 2020.01+dfsg-1 |
| openSUSE:Leap 15.1 | u-boot | before 2019.01-lp151.6.13.1 | 2019.01-lp151.6.13.1 |
| SUSE:Linux Enterprise High Performance Computing 15-ESPOS | u-boot | before 2018.03-4.6.1 | 2018.03-4.6.1 |
| SUSE:Linux Enterprise High Performance Computing 15-ESPOS | u-boot-rpi3 | before 2018.03-4.6.2 | 2018.03-4.6.2 |
| SUSE:Linux Enterprise Module for Basesystem 15 SP1 | u-boot | before 2019.01-7.10.1 | 2019.01-7.10.1 |
| SUSE:Linux Enterprise Module for Basesystem 15 SP1 | u-boot-rpi3 | before 2019.01-7.10.2 | 2019.01-7.10.2 |
| SUSE:Linux Enterprise Server 12 SP3-LTSS | u-boot | before 2016.07-12.3.1 | 2016.07-12.3.1 |
| SUSE:Linux Enterprise Server 12 SP3-LTSS | u-boot-rpi3 | before 2016.07-12.3.1 | 2016.07-12.3.1 |
| SUSE:Linux Enterprise Server 12 SP4-LTSS | u-boot | before 2018.03-4.3.1 | 2018.03-4.3.1 |
| SUSE:Linux Enterprise Server 12 SP4-LTSS | u-boot-rpi3 | before 2018.03-4.3.1 | 2018.03-4.3.1 |
| SUSE:Linux Enterprise Server 12 SP5 | u-boot | before 2019.01-5.3.1 | 2019.01-5.3.1 |
| SUSE:Linux Enterprise Server 12 SP5 | u-boot-rpi3 | before 2019.01-5.3.1 | 2019.01-5.3.1 |
Same product
denx: all recordsOther highest-scoring records for the same primary product.
- CVE-2022-34835In Das U-Boot through 2022.07-rc5, an integer signedness error and resultant stack-based buffer overflow in the "i2c md" command enables the40Plan
- CVE-2022-30767nfs_lookup_reply in net/nfs.c in Das U-Boot through 2022.04 (and through 2022.07-rc2) has an unbounded memcpy with a failed length check, le40Plan
- CVE-2020-8432In Das U-Boot through 2020.01, a double free has been found in the cmd/gpt.c do_rename_gpt_parts() function.40Plan
- CVE-2019-14204An issue was discovered in Das U-Boot through 2019.07.40Plan
- CVE-2019-14203An issue was discovered in Das U-Boot through 2019.07.40Plan
- CVE-2019-14202An issue was discovered in Das U-Boot through 2019.07.40Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:u-boot | 2020.01+dfsg-1 · Debian:12 | Package registry (OSV) |
| opensuse:u-boot | 2019.01-lp151.6.13.1 · openSUSE:Leap 15.1 | Package registry (OSV) |
| suse:u-boot | 2019.01-5.3.1 · SUSE:Linux Enterprise Server 12 SP5 | Package registry (OSV) |
| suse:u-boot-rpi3 | 2019.01-5.3.1 · SUSE:Linux Enterprise Server 12 SP5 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-787 · Out-of-bounds WriteCVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- blog.semmle.com/uboot-rce-nfs-vulnerability/
- gitlab.com/u-boot/u-boot
- cert-portal.siemens.com/productcert/html/ssa-577017.html
Vendor advisories and official records. Exploit/PoC links are deliberately left out.