Description
barebox prior to version 2026.04.0 contains an out-of-bounds read vulnerability in DHCP option parsing within the dhcp_message_type() function that fails to verify the options pointer remains within received packet bounds. An attacker on the same broadcast domain can send a crafted DHCP Offer or ACK packet without a proper 0xff end marker to cause the parser to read past valid packet data and potentially crash the system.
References (3)
Core 3
Core References
Product product
https://github.com/barebox/barebox
Third Party Advisory third-party-advisory
https://www.vulncheck.com/advisories/barebox-out-of-bounds-read-in-dhcp-option-parsing
Scores
CVSS v3
6.5
EPSS
0.0022
EPSS Percentile
12.6%
Attack Vector
ADJACENT_NETWORK
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-125
Status
published
Products (2)
barebox/barebox
< 2026.04.0
pengutronix/barebox
< 2026.04.0
Published
May 11, 2026
Tracked Since
May 12, 2026