CVE-2026-19505

Improper cryptographic signature verification in jstfunctions.c in RDK-B WebUI rdkb-2025q4-kirkstone.04.10.26 allows a remote attacker to bypass authentication and obtain administrative access via a forged JWT containing an invalid RSA signature...

CVE-2026-19507

Uncontrolled resource consumption in check.jst in RDK-B WebUI rdkb-2025q4-kirkstone.04.10.26 allows a remote unauthenticated attacker to cause denial of service via excessively large password values...

CVE-2026-19508

Heap-based buffer overflow in the multipart form-data parser in jstpost.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...

CVE-2026-19508 RDK WebUI heap-based buffer overflow vulnerability

Heap-based buffer overflow in the multipart form-data parser in jstpost.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...

CVE-2026-19508 RDK WebUI heap-based buffer overflow vulnerability

Heap-based buffer overflow in the multipart form-data parser in jstpost.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...

CVE-2026-19509

The RDK-B WebUI (version rdkb-2025q4-kirkstone.04.10.26) contains a vulnerability in the ajaxSet_wireless_network_configuration.jst handler due to improper input validation of the ssid_number parameter. An authenticated administrator can supply an abnormally large value, leading to memory corrupt...

CVE-2026-19509 RDK WebUI DOS vulnerability

Improper input validation in ajaxSetwirelessnetworkconfiguration.jst in RDK-B WebUI rdkb-2025q4-kirkstone.04.10.26 allows an authenticated attacker to cause denial of service via a crafted ssidnumber parameter...

CVE-2026-19509 RDK WebUI DOS vulnerability

Improper input validation in ajaxSetwirelessnetworkconfiguration.jst in RDK-B WebUI rdkb-2025q4-kirkstone.04.10.26 allows an authenticated attacker to cause denial of service via a crafted ssidnumber parameter...

CVE-2026-19507 RDK WebUI uncontrolled resource consumption

Uncontrolled resource consumption in check.jst in RDK-B WebUI rdkb-2025q4-kirkstone.04.10.26 allows a remote unauthenticated attacker to cause denial of service via excessively large password values...

CVE-2026-19506

The RDK-B WebUI (version rdkb-2025q4-kirkstone.04.10.26) contains a race condition in the /usr/www2/check.jst file. The vulnerability arises because the login process uses a shared value to store password verification results. Due to improper synchronization, concurrent authentication requests ca...

CVE-2026-19506 RDK-B WebUI race condition vulnerability

Race condition in check.jst in RDK-B WebUI rdkb-2025q4-kirkstone.04.10.26 allows a remote attacker to gain unauthorized access via concurrent authentication requests that exploit shared authentication state...

CVE-2026-19506 RDK-B WebUI race condition vulnerability

Race condition in check.jst in RDK-B WebUI rdkb-2025q4-kirkstone.04.10.26 allows a remote attacker to gain unauthorized access via concurrent authentication requests that exploit shared authentication state...

CVE-2026-19505 RDK-B WebUI improper cryptographic signature verification vulnerability

Improper cryptographic signature verification in jstfunctions.c in RDK-B WebUI rdkb-2025q4-kirkstone.04.10.26 allows a remote attacker to bypass authentication and obtain administrative access via a forged JWT containing an invalid RSA signature...

CVE-2026-19505

The RDK-B WebUI (version rdkb-2025q4-kirkstone) is vulnerable to an authentication bypass due to improper cryptographic signature verification in jst_functions.c. The root cause is the incorrect handling of the return value from OpenSSL's EVP_VerifyFinal() function, which treats both valid and in...

CVE-2026-19506: Concurrent Execution using Shared Resource with Improper Synchronization

Race condition in check.jst in RDK-B WebUI rdkb-2025q4-kirkstone.04.10.26 allows a remote attacker to gain unauthorized access via concurrent authentication requests that exploit shared authentication state...

PT-2026-78639

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...

CVE-2026-19509: Improper Input Validation

Improper input validation in ajaxSetwirelessnetworkconfiguration.jst in RDK-B WebUI rdkb-2025q4-kirkstone.04.10.26 allows an authenticated attacker to cause denial of service via a crafted ssidnumber parameter...

CVE-2026-19508: Improper Restriction of Operations within the Bounds of a Memory Buffer

Heap-based buffer overflow in the multipart form-data parser in jstpost.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...

PT-2026-78636

Name of the Vulnerable Software and Affected Versions RDK-B WebUI version rdkb-2025q4-kirkstone Description Improper cryptographic signature verification in the jst functions.c file allows a remote, unauthenticated attacker to bypass authentication and obtain administrative access. The issue occu...

CVE-2026-19505: Improper Verification of Cryptographic Signature

Improper cryptographic signature verification in jstfunctions.c in RDK-B WebUI rdkb-2025q4-kirkstone.04.10.26 allows a remote attacker to bypass authentication and obtain administrative access via a forged JWT containing an invalid RSA signature...