CVE-2026-18634

HIGHPre-NVD 8.48.4—
EchelonGraph scoreMEDIUM confidence

Score 8.4 from GitHub Security Advisory (severity: HIGH) published 2026-08-11. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 8.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
8.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.4Exploit: None knownExposed: 0

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

An insecure handling of serialized objects vulnerability was found in the one of the service of GMS application 9.5.1 (Build 9510.1044) and earlier versions. A local attacker with the ability to interact with the service could exploit this behavior to perform unauthorized actions through the affected component.

CVSS v3
8.4
EG Score
8.4(medium)
EG Risk
38(Track)
EG Risk 38/100SSVC: 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
Severity84% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
13%
KEV
Not listed

Published

August 11, 2026

Last Modified

August 28, 2026

Advisory Details (1)

Auto-updated Aug 12, 2026
No patch confirmed yet.
generic

Security Advisory

https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0011

Vendor Advisories for CVE-2026-18634(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 22× in last 7d / 106× 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 159 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-18634?
CVE-2026-18634 is a high vulnerability published on August 11, 2026. An insecure handling of serialized objects vulnerability was found in the one of the service of GMS application 9.5.1 (Build 9510.1044) and earlier versions. A local attacker with the ability to interact with the service could exploit this behavior to perform unauthorized actions through the…
When was CVE-2026-18634 disclosed?
CVE-2026-18634 was first published in the National Vulnerability Database on August 11, 2026, with the most recent update on August 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-18634 actively exploited?
CVE-2026-18634 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 87.0% of all scored CVEs.
What is the CVSS score of CVE-2026-18634?
CVE-2026-18634 has a CVSS v3.1 base score of 8.4 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-18634?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-18634, 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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