Vulnerability details
CVE-2026-19508
RDK RDK-B WebUI
RDK WebUI heap-based buffer overflow vulnerability
CVSS 3.1
9.8Critical
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.8Critical | 3.1 | CISA ADP / Vulnrichment (CISA-ADP) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| RDK | RDK-B WebUI | rdkb-2025q4-kirkstone | CVEProject cvelistV5 (CNA) |
References and advisories
2
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Details
- Published
- 2026-08-19
- Last updated
- 2026-08-27
- State
- Published
- Assigner (CNA)
- certcc
Exploit prediction (EPSS)
0.98%
Probability of exploitation in 30 days
62.4%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer