CVE-2026-19508

CVSS 9.8 (critical) · published 2026-08-19

Heap-based buffer overflow in the multipart form-data parser in `jst_post.c` in RDK-B WebUI `rdkb-2025q4-kirkstone.04.10.26` allows a remote unauthenticated attacker to cause memory corruption and denial of service, and potentially execute arbitrary code, via a crafted multipart/form-data request.

Weakness: CWE-119

Source: NVD CVE-2026-19508

References

• https://developer.rdkcentral.com/documentation/documentation/rdk_broadband_documentation/components/webui/
• https://whitehats.pwr.edu.pl//blog/2026-08-19-multiple-vulnerabilities-in-rdkb/

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