CVE-2026-49191

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-06-04. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.8Exploit: None knownExposed: 0

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

The production build of the M3WebServer hard-codes its backend API keys, which can be easily intercepted through verbose error handling pages.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
59(Track)
EG Risk 59/100SSVC: 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
Severity98% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
22%
KEV
Not listed

Published

June 4, 2026

Last Modified

July 22, 2026

Advisory Details (1)

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

Security Advisory: Upcoming Firmware Update for Acer Connect M6E 5G Portable WiFi Router - Acer Community

https://community.acer.com/en/kb/articles/19707

Vendor Advisories for CVE-2026-49191(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 6× in last 7d / 46× 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 394 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-49191?
CVE-2026-49191 is a critical vulnerability published on June 4, 2026. The production build of the M3WebServer hard-codes its backend API keys, which can be easily intercepted through verbose error handling pages.
When was CVE-2026-49191 disclosed?
CVE-2026-49191 was first published in the National Vulnerability Database on June 4, 2026, with the most recent update on July 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-49191 actively exploited?
CVE-2026-49191 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 78.3% of all scored CVEs.
What is the CVSS score of CVE-2026-49191?
CVE-2026-49191 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-49191?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-49191, 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-2026-49191

Explore →

Is Your Infrastructure Affected by CVE-2026-49191?

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

Start Free Scan →Browse All CVEs