Is CVE-2026-74225 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-74225 being exploited in the wild.

How severe is CVE-2026-74225?

High severity, with a CVSS score of 7.1, published 29 September 2026.

Which products and versions are affected?

Das U-Boot U-Boot before 2026.10-rc5.

Is there a fix for CVE-2026-74225?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-74225 attacked?

It is attacked over the network, in device firmware.

Am I affected by CVE-2026-74225?

Check whether you run Das U-Boot U-Boot at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-74225: U-Boot out-of-bounds memory access in DHCPv6 option parsing

CVE-2026-74225 · Severity: high · CVSS 7.1 · Published 2026-09-29

U-Boot is a bootloader that initializes hardware and loads the operating system during system startup. An attacker on the local network can send malformed DHCPv6 packets during network boot to cause memory corruption and crash the bootloader, preventing the system from starting.

Technologies: Das U-Boot U-Boot. Vendors: Das U-Boot.

Quick answers

Is CVE-2026-74225 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-74225 being exploited in the wild.
How severe is CVE-2026-74225?: High severity, with a CVSS score of 7.1, published 29 September 2026.
Which products and versions are affected?: Das U-Boot U-Boot before 2026.10-rc5.
Is there a fix for CVE-2026-74225?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-74225 attacked?: It is attacked over the network, in device firmware.
Am I affected by CVE-2026-74225?: Check whether you run Das U-Boot U-Boot at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The dhcp6_parse_options() function in U-Boot's DHCPv6 implementation fails to properly validate the length of SERVERID and CLIENTID options in incoming DHCPv6 packets, leading to out-of-bounds memory access. An attacker with network access can craft malicious DHCPv6 ADVERTISE or REPLY packets during netboot to trigger this vulnerability and corrupt bootloader memory.

Affected products

Das U-Boot U-Boot before 2026.10-rc5

Timeline

2026-09-29: disclosed

References

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