CVE-2026-74222

8.2 HIGHpublic exploit available

Published 2026-09-29 · Updated 2026-09-29

AI analysis for this CVE has not been generated yet. Raw NVD data is shown below.

NVD description

U-Boot before 2026.10-rc5 contains a use-after-free vulnerability in the httpc_recv_cb() function within the lwIP wget implementation. When HTTP data storage fails, the callback frees the connection PCB but returns ERR_BUF instead of ERR_ABRT, causing the TCP input path to access released memory and crash the bootloader.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

Weaknesses

CWE-416

Public exploit & PoC references

https://github.com/u-boot/u-boot
https://github.com/u-boot/u-boot/blob/v2026.07/net/lwip/wget.c#L194
https://github.com/u-boot/u-boot/commit/2d94618a58aeb7630f18eee33419ce48d0fd3616

All references

https://github.com/u-boot/u-boot
https://github.com/u-boot/u-boot/blob/v2026.07/net/lwip/wget.c#L194
https://github.com/u-boot/u-boot/commit/2d94618a58aeb7630f18eee33419ce48d0fd3616
https://www.vulncheck.com/advisories/u-boot-before-2026.10-rc5-use-after-free-in-lwip-wget-receive-callback

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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