CVE-2026-19508
RDK WebUI heap-based buffer overflow vulnerability
- State
- Published
- Severity
- 9.8 Critical
- Published
- Aug 19, 2026
- Updated
- Aug 27, 2026
- Reserved
- Aug 10, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | CISA-ADP |
Weaknesses
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
Affected Products
| Product | Versions |
|---|---|
RDK-B WebUIRDK |
|
References
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