CVE-2026-7425
mediumpriority · track · 0EPSS 0.002 · 14 %ileEUUSEPSS · scored 2026-10-28
Insufficient option length validation in the IPv6 Router Advertisement parser in FreeRTOS-Plus-TCP before V4.2.6 and V4.4.1 allows an adjacent network actor to cause a denial of service (device crash) by sending a crafted Router Advertisement with a truncated PREFIX_INFORMATION option that is smaller than the expected structure size. To mitigate this issue, users should upgrade to the fixed version when available.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 2.3–6.5
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (4)
Products and version ranges known to be affected.
also known as (2)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (10)
External citations — patches, advisories, analysis.
- https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/Patchcnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2026-7425cnnvd
- https://aws.amazon.com/security/security-bulletins/2026-023-aws/enisa_euvd
- https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.2.6enisa_euvd
- https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.4.1enisa_euvd
- https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-gffr-xgjg-jh9jenisa_euvd
- https://aws.amazon.com/security/security-bulletins/2026-023-aws/Vendor Advisorynvd
- https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.2.6Release Notesnvd
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