CVE-2026-19508
Last modified
CVE-2026-19508 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 0.81% chance of exploitation in the next 30 days.
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.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| RDK | RDK-B WebUI | rdkb-2025q4-kirkstone |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
Frequently Asked Questions
What is CVE-2026-19508?
How severe is CVE-2026-19508?
How do I fix CVE-2026-19508?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-19501CSV export functionality in Brainstorm Force SureForms versi…8.8
- CVE-2026-19502MongoDB SQL Schema Builder CLI records its startup configura…5.5
- CVE-2026-19503MongoDB Schema Manager and MongoDB Atlas SQL ODBC Driver do …4.8
- CVE-2026-19505Improper cryptographic signature verification in `jst_functi…9.8
- CVE-2026-19506Race condition in `check.jst` in RDK-B WebUI `rdkb-2025q4-ki…8.1
- CVE-2026-19507Uncontrolled resource consumption in `check.jst` in RDK-B We…7.5
- CVE-2026-19509Improper input validation in `ajaxSet_wireless_network_confi…6.5
- CVE-2026-1951Delta Electronics AS320T has no checking of the length of th…9.8
- CVE-2026-19513The Gravity Forms plugin for WordPress is vulnerable to Arbi…8.1
- CVE-2026-19516A caller-supplied X-Grafana-URL request header controls the …9.1
- CVE-2026-19517Improper Validation of Specified Quantity in Input and Alloc…6.5
- CVE-2026-19518Improper Validation of Specified Quantity in Input vulnerabi…6.5
Are you affected by CVE-2026-19508?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST