CVE-2026-7426
- Source
- https://cve.org/CVERecord?id=CVE-2026-7426
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-7426.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-7426
- Aliases
-
- GHSA-97qg-4359-xm3x
- Published
- 2026-04-29T18:53:52.187Z
- Modified
- 2026-07-15T01:48:52.957493747Z
- Severity
-
- 6.1 (Medium) CVSS_V4 - CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- Out-of-Bounds Write via Unsanitized Prefix Length in Router Advertisement Processing in FreeRTOS-Plus-TCP
- Details
-
Insufficient validation of the prefix length field in IPv6 Router Advertisement processing in FreeRTOS-Plus-TCP before V4.2.6 and V4.4.1 allows an adjacent network actor to cause memory corruption by sending a crafted Router Advertisement with a prefix length value exceeding the maximum valid length, resulting in a heap buffer overflow. Users processing IPv4 RA only are not impacted.
To mitigate this issue, users should upgrade to the fixed version when available.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/7xxx/CVE-2026-7426.json", "cwe_ids": [ "CWE-787" ], "cna_assigner": "AMZN" }- References
-
- https://aws.amazon.com/security/security-bulletins/2026-023-aws/
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/7xxx/CVE-2026-7426.json
- https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-97qg-4359-xm3x
- https://nvd.nist.gov/vuln/detail/CVE-2026-7426
- https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.2.6
- https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.4.1
- https://github.com/FreeRTOS/FreeRTOS-Plus-TCP
Affected packages
Git / github.com/freertos/freertos-plus-tcp
Affected ranges
- Type
- GIT
- Repo
- https://github.com/freertos/freertos-plus-tcp
- Events
- Database specific
{ "extracted_events": [ { "introduced": "4.0.0" }, { "fixed": "4.2.6" }, { "introduced": "4.3.0" }, { "fixed": "4.4.1" } ], "source": [ "CPE_RANGE", "REFERENCES" ], "cpe": "cpe:2.3:a:amazon:freertos-plus-tcp:*:*:*:*:*:*:*:*" }