CVE-2026-19506

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-08-19. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity81% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
33%
KEV
Not listed

Published

August 19, 2026

Last Modified

September 3, 2026

Advisory Details (2)

Auto-updated Aug 27, 2026
No patch confirmed yet.
generic

[ENG] Multiple vulnerabilities in RDK-B WebUI – KN White Hats

https://whitehats.pwr.edu.pl//blog/2026-08-19-multiple-vulnerabilities-in-rdkb/
generic

RDK Documentation Portal | Documentation | WebUI - RDK Documentation Portal | Documentation

https://developer.rdkcentral.com/documentation/documentation/rdk_broadband_documentation/components/webui/

Vendor Advisories for CVE-2026-19506(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 24× in last 7d / 103× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 108 total refreshes for this CVE.

  1. 2026-09-20 16:58 UTCGHSA enrichment
  2. 2026-09-20 05:43 UTCGHSA enrichment
  3. 2026-09-19 18:32 UTCEG score recompute
  4. 2026-09-19 18:32 UTCGHSA enrichment
  5. 2026-09-19 07:10 UTCEG score recompute
  6. 2026-09-19 07:10 UTCGHSA enrichment
  7. 2026-09-18 19:56 UTCEG score recompute
  8. 2026-09-18 19:56 UTCGHSA enrichment
  9. 2026-09-18 19:27 UTCEPSS rescore
  10. 2026-09-18 08:43 UTCGHSA enrichment
  11. 2026-09-17 21:29 UTCEG score recompute
  12. 2026-09-17 21:29 UTCGHSA enrichment
  13. 2026-09-17 07:29 UTCGHSA enrichment
  14. 2026-09-16 20:05 UTCEG score recompute
  15. 2026-09-16 20:05 UTCGHSA enrichment
  16. 2026-09-16 14:07 UTCEPSS rescore
  17. 2026-09-16 06:02 UTCEG score recompute
  18. 2026-09-16 06:02 UTCGHSA enrichment
  19. 2026-09-16 05:14 UTCEPSS rescore
  20. 2026-09-15 18:50 UTCGHSA enrichment
  21. 2026-09-15 06:29 UTCEG score recompute
  22. 2026-09-15 06:29 UTCGHSA enrichment
  23. 2026-09-14 19:18 UTCGHSA enrichment
  24. 2026-09-14 08:06 UTCGHSA enrichment
  25. 2026-09-13 20:54 UTCEG score recompute
Show 75 more
  1. 2026-09-13 20:54 UTCGHSA enrichment
  2. 2026-09-13 16:46 UTCEPSS rescore
  3. 2026-09-13 09:42 UTCGHSA enrichment
  4. 2026-09-12 22:31 UTCEG score recompute
  5. 2026-09-12 22:31 UTCGHSA enrichment
  6. 2026-09-12 15:00 UTCEPSS rescore
  7. 2026-09-12 11:19 UTCGHSA enrichment
  8. 2026-09-11 23:35 UTCEG score recompute
  9. 2026-09-11 23:35 UTCGHSA enrichment
  10. 2026-09-11 14:52 UTCEPSS rescore
  11. 2026-09-11 12:17 UTCEG score recompute
  12. 2026-09-11 12:17 UTCGHSA enrichment
  13. 2026-09-11 09:36 UTCEPSS rescore
  14. 2026-09-11 00:23 UTCGHSA enrichment
  15. 2026-09-10 13:05 UTCEG score recompute
  16. 2026-09-10 13:05 UTCGHSA enrichment
  17. 2026-09-10 09:34 UTCEPSS rescore
  18. 2026-09-10 01:53 UTCGHSA enrichment
  19. 2026-09-09 14:41 UTCGHSA enrichment
  20. 2026-09-09 02:32 UTCEG score recompute
  21. 2026-09-09 02:32 UTCGHSA enrichment
  22. 2026-09-08 22:00 UTCEPSS rescore
  23. 2026-09-08 02:51 UTCEG score recompute
  24. 2026-09-08 02:51 UTCGHSA enrichment
  25. 2026-09-07 16:01 UTCEPSS rescore
  26. 2026-09-07 15:39 UTCGHSA enrichment
  27. 2026-09-07 01:00 UTCEG score recompute
  28. 2026-09-07 01:00 UTCGHSA enrichment
  29. 2026-09-06 13:47 UTCEPSS rescore
  30. 2026-09-06 13:34 UTCGHSA enrichment
  31. 2026-09-06 02:22 UTCEG score recompute
  32. 2026-09-06 02:22 UTCGHSA enrichment
  33. 2026-09-05 15:08 UTCGHSA enrichment
  34. 2026-09-05 03:47 UTCGHSA enrichment
  35. 2026-09-04 16:35 UTCEG score recompute
  36. 2026-09-04 16:34 UTCGHSA enrichment
  37. 2026-09-04 05:18 UTCEG score recompute
  38. 2026-09-04 05:18 UTCGHSA enrichment
  39. 2026-09-04 05:06 UTCEPSS rescore
  40. 2026-09-03 18:05 UTCGHSA enrichment
  41. 2026-09-03 10:08 UTCGHSA enrichment
  42. 2026-09-02 22:55 UTCEG score recompute
  43. 2026-09-02 22:55 UTCGHSA enrichment
  44. 2026-09-02 14:11 UTCEPSS rescore
  45. 2026-09-02 11:42 UTCGHSA enrichment
  46. 2026-09-02 00:28 UTCEG score recompute
  47. 2026-09-02 00:28 UTCGHSA enrichment
  48. 2026-09-01 13:53 UTCEPSS rescore
  49. 2026-09-01 13:11 UTCEG score recompute
  50. 2026-09-01 13:11 UTCGHSA enrichment
  51. 2026-09-01 04:39 UTCEPSS rescore
  52. 2026-09-01 01:59 UTCGHSA enrichment
  53. 2026-08-31 14:47 UTCGHSA enrichment
  54. 2026-08-31 03:34 UTCEG score recompute
  55. 2026-08-31 03:34 UTCGHSA enrichment
  56. 2026-08-30 19:17 UTCEPSS rescore
  57. 2026-08-30 16:22 UTCGHSA enrichment
  58. 2026-08-30 05:10 UTCEG score recompute
  59. 2026-08-30 05:10 UTCGHSA enrichment
  60. 2026-08-30 01:22 UTCEPSS rescore
  61. 2026-08-29 17:58 UTCGHSA enrichment
  62. 2026-08-29 06:43 UTCEG score recompute
  63. 2026-08-29 06:43 UTCGHSA enrichment
  64. 2026-08-28 21:41 UTCEPSS rescore
  65. 2026-08-28 19:31 UTCGHSA enrichment
  66. 2026-08-28 04:40 UTCEG score recompute
  67. 2026-08-28 04:40 UTCGHSA enrichment
  68. 2026-08-27 17:23 UTCGHSA enrichment
  69. 2026-08-27 16:53 UTCEG score recompute▲ 8.10
  70. 2026-08-27 16:52 UTCGHSA enrichment
  71. 2026-08-27 16:43 UTCMITRE cvelistV5CVSS v3 → 8.1 · severity → HIGH
  72. 2026-08-27 14:25 UTCEPSS rescore
  73. 2026-08-26 14:46 UTCEPSS rescore
  74. 2026-08-25 19:22 UTCGHSA enrichment
  75. 2026-08-25 13:48 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-19506?
CVE-2026-19506 is a high vulnerability published on August 19, 2026. 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.
When was CVE-2026-19506 disclosed?
CVE-2026-19506 was first published in the National Vulnerability Database on August 19, 2026, with the most recent update on September 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-19506 actively exploited?
CVE-2026-19506 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 67.4% of all scored CVEs.
What is the CVSS score of CVE-2026-19506?
CVE-2026-19506 has a CVSS v3.1 base score of 8.1 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-19506?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-19506, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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