CVE-2026-74222 U-Boot - Use After Free

U-Boot < 2026.10-rc5 contains a use-after-free vulnerability caused by improper error handling in httpc_recv_cb() function in lwIP wget implementation, letting attackers cause bootloader crash, exploit requires triggering HTTP data storage failure.

CVSS base score 8.2 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.30% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Use After Free
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Published
29 September 2026
Updated
15 October 2026
Weakness
CWE-416

Vendor fix

Update to version 2026.10-rc5 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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