CVE-2026-12187

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-15. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS: 8.8Exploit: Elevated riskExposed: 0

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

A security vulnerability has been detected in GL.iNet GL-MT3000 up to 4.4.5. Affected by this vulnerability is an unknown functionality of the file /usr/bin/one_click_upgrade of the component Online Firmware Upgrade Handler. Such manipulation leads to command injection. The attack can be launched remotely. The exploit has been disclosed publicly and may be used. Upgrading to version 4.7 addresses this issue. Upgrading the affected component is advised. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
56(Track*)
EG Risk 56/100SSVC: 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
Severity88% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
2%
EPSS %ILE
78%
KEV
Not listed

Published

June 14, 2026

Last Modified

July 24, 2026

Advisory Details (1)

Auto-updated Jun 15, 2026
No patch confirmed yet.
generic

iot_vul/GL-iNet/MT3000/4.4.5/upgrade_online_url at main · StrTzz123/iot_vul · GitHub

https://github.com/StrTzz123/iot_vul/tree/main/GL-iNet/MT3000/4.4.5/upgrade_online_url

Vendor Advisories for CVE-2026-12187(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 20× in last 7d / 75× 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 127 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-12187?
CVE-2026-12187 is a high vulnerability published on June 14, 2026. A security vulnerability has been detected in GL.iNet GL-MT3000 up to 4.4.5. Affected by this vulnerability is an unknown functionality of the file /usr/bin/oneclickupgrade of the component Online Firmware Upgrade Handler. Such manipulation leads to command injection. The attack can be launched…
When was CVE-2026-12187 disclosed?
CVE-2026-12187 was first published in the National Vulnerability Database on June 14, 2026, with the most recent update on July 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-12187 actively exploited?
CVE-2026-12187 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 21.9% of all scored CVEs.
What is the CVSS score of CVE-2026-12187?
CVE-2026-12187 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-12187?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-12187, 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

Explore the affected products and dependency analysis for CVE-2026-12187

Explore →

Is Your Infrastructure Affected by CVE-2026-12187?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs