CVE-2026-74220 (GCVE-0-2026-74220)

Vulnerability from cvelistv5 – Published: 2026-09-29 21:29 – Updated: 2026-09-30 14:04
VLAI
Title
U-Boot before 2026.10-rc5 Buffer Overflow via NFS READ Reply
Summary
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.
Severity
8.8 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
8.2 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 14:04 UTC
CWE
  • CWE-195 - Signed to Unsigned Conversion Error
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 7131 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
u-boot u-boot Affected: 0 , < 2026.10-rc5 (custom)
    cpe:2.3:a:denx:u-boot:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-08-19 00:00
Credits
Shahriyar Jalayeri (ByteRay Ltd.) Mehrun P. Hunter (ByteRay Ltd.)
Show details on NVD website
To clipboard 

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