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CVE-2026-74220

HighCVSS 8.8 / 10
Published Sep 29, 2026·Last modified Sep 30, 2026
Affected Components(499)
u-boot/u-boot
2011.12-rc3
u-boot/u-boot
2012.10-rc3
u-boot/u-boot
LABEL_2003_06_27_2340
1 / 167
Description

U-Boot before 2026.10-rc5 contains a buffer overflow in nfs_read_reply() function in net/nfs-common.c that allows attackers to corrupt memory by supplying crafted NFS READ reply lengths. A malicious NFS server can exploit signed integer handling to bypass length validation and write far past the destination buffer, crashing the bootloader or corrupting memory.

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Risk Scores
Base Score
8.8

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability.

Threat Intelligence
6.7

Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.

EPSS
0.34%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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