CVE-2026-74221: U-Boot before 2026.10-rc5 Buffer Overflow via NFS READLINK
Fixed in 2026.10-rc5 · Affected: u-boot before 2026.10-rc5 · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 27% of scored CVEs
DescriptionCVE.org
U-Boot before 2026.10-rc5 contains a buffer overflow in nfs_readlink_reply() function in net/nfs-common.c when processing NFS server responses. A malicious NFS server can send crafted READLINK replies with negative or oversized symlink length values to corrupt memory and crash the bootloader.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- u-boot · u-bootbefore 2026.10-rc5
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- u-boot
- Published
- September 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-74221 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.