High
U-Boot before 2026.10-rc5 Out-of-Bounds Write via DHCPv6
U-Boot before 2026.10-rc5 contains out-of-bounds memory access in dhcp6_parse_options() that fails to validate SERVERID and CLIENTID option lengths from DHCPv6 packets. Attackers on the local network can send crafted DHCPv6 ADVERTISE or REPLY packets during netboot to corrupt memory and crash the bootloader.
Announced Source revision 1
Original source ↗CVE-2026-74225
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-74225
u-boot
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://github.com/u-boot/u-boot",
"vendor": "u-boot",
"product": "u-boot",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "2026.10-rc5",
"versionType": "custom"
}
],
"packageURL": "pkg:github/u-boot/u-boot",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-74225
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #4827 · Revision 1
- Added to Heist Feed
- Publisher date