CVE-2026-49198

MEDIUMNVD 4.94.9
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score 4.9 from GitHub Security Advisory (severity: HIGH) published 2026-05-29. NVD baseline CVSS 4.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
4.9EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 4.9Exploit: None knownExposed services: Not assessed

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

The CVE record's CNA (Acer Inc.) lists Acer Predator Connect W6x versions W6x_GBL_2.00.000005 and later as affected. No release containing a fix is confirmed on record.

Improper access control in the MQTT broker allows wildcard topic subscriptions, exposing all MQTT traffic to unauthorized actors.

CVSS v3
4.9
EG Score
4.9MEDIUMmedium confidence
EG Risk
22
EG Risk 22/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity49% × 45%
Impact severity (EG Severity): CVSS 4.9 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.4% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.3%
EPSS %ILE
26th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (4.9): severity, escalated by confirmed exploitation. This CVE's 4.9 is its impact severity (EG Severity), not escalated.

EG Severity
4.9 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.3% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-17). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

May 29, 2026

Last Modified

July 21, 2026

Advisory Details (1)

Auto-updated May 29, 2026
No fix on record yet.
Web page

Security Advisory: Firmware Update for Acer Connect W6x Router - Acer Community

https://community.acer.com/en/kb/articles/19672

Vendor Advisories for CVE-2026-49198(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 8× in last 7d / 30× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 236 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 136 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  2. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  3. 2026-10-18 03:34 UTCEG score recompute
  4. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  5. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  6. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  7. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  8. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  9. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  10. 2026-10-12 16:00 UTCEG score recompute
  11. 2026-10-11 19:43 UTCEG score recompute
  12. 2026-10-11 16:57 UTCEG score recompute
  13. 2026-10-11 14:22 UTCEG score recompute
  14. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  15. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  16. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  17. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  18. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  19. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  20. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  21. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  22. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  23. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  24. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  25. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.3% · 25th percentile
Show 75 more
  1. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  2. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  3. 2026-09-26 00:27 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  4. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  5. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  6. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  7. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  8. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  9. 2026-09-14 06:29 UTCEG score recompute
  10. 2026-09-14 06:28 UTCGHSA enrichmentGHSA-jwxj-jjcm-8p4w · GitHub severity HIGH · GitHub CVSS 4.9
  11. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  12. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  13. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  14. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  15. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  16. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  17. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  18. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  19. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  20. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  21. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  22. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  23. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  24. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  25. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  26. 2026-08-25 04:28 UTCEG score recompute
  27. 2026-08-25 04:28 UTCGHSA enrichmentGHSA-jwxj-jjcm-8p4w · GitHub severity HIGH · GitHub CVSS 4.9
  28. 2026-08-23 14:19 UTCEG score recompute
  29. 2026-08-23 14:19 UTCGHSA enrichmentGHSA-jwxj-jjcm-8p4w · GitHub severity HIGH · GitHub CVSS 4.9
  30. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  31. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  32. 2026-08-21 15:14 UTCEG score recompute
  33. 2026-08-21 15:14 UTCGHSA enrichmentGHSA-jwxj-jjcm-8p4w · GitHub severity HIGH · GitHub CVSS 4.9
  34. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  35. 2026-08-20 10:30 UTCEG score recompute
  36. 2026-08-20 10:30 UTCGHSA enrichmentGHSA-jwxj-jjcm-8p4w · GitHub severity HIGH · GitHub CVSS 4.9
  37. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  38. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  39. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  40. 2026-08-17 06:55 UTCEG score recompute
  41. 2026-08-17 06:55 UTCGHSA enrichmentGHSA-jwxj-jjcm-8p4w · GitHub severity HIGH · GitHub CVSS 4.9
  42. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  43. 2026-08-16 04:16 UTCEG score recompute
  44. 2026-08-16 04:16 UTCGHSA enrichmentGHSA-jwxj-jjcm-8p4w · GitHub severity HIGH · GitHub CVSS 4.9
  45. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  46. 2026-08-15 02:27 UTCEG score recompute
  47. 2026-08-15 02:27 UTCGHSA enrichmentGHSA-jwxj-jjcm-8p4w · GitHub severity HIGH · GitHub CVSS 4.9
  48. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  49. 2026-08-14 00:38 UTCEG score recompute
  50. 2026-08-14 00:38 UTCGHSA enrichmentGHSA-jwxj-jjcm-8p4w · GitHub severity HIGH · GitHub CVSS 4.9
  51. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  52. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  53. 2026-08-12 13:50 UTCEG score recompute
  54. 2026-08-12 13:50 UTCGHSA enrichmentGHSA-jwxj-jjcm-8p4w · GitHub severity HIGH · GitHub CVSS 4.9
  55. 2026-08-11 10:19 UTCEG score recompute
  56. 2026-08-11 10:19 UTCGHSA enrichmentGHSA-jwxj-jjcm-8p4w · GitHub severity HIGH · GitHub CVSS 4.9
  57. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  58. 2026-08-10 08:30 UTCEG score recompute
  59. 2026-08-10 08:30 UTCGHSA enrichmentGHSA-jwxj-jjcm-8p4w · GitHub severity HIGH · GitHub CVSS 4.9
  60. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  61. 2026-08-09 06:41 UTCEG score recompute
  62. 2026-08-09 06:41 UTCGHSA enrichmentGHSA-jwxj-jjcm-8p4w · GitHub severity HIGH · GitHub CVSS 4.9
  63. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  64. 2026-08-08 04:52 UTCEG score recompute
  65. 2026-08-08 04:52 UTCGHSA enrichmentGHSA-jwxj-jjcm-8p4w · GitHub severity HIGH · GitHub CVSS 4.9
  66. 2026-08-07 03:04 UTCEG score recompute
  67. 2026-08-07 03:03 UTCGHSA enrichmentGHSA-jwxj-jjcm-8p4w · GitHub severity HIGH · GitHub CVSS 4.9
  68. 2026-08-06 13:47 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  69. 2026-08-06 01:10 UTCEG score recompute
  70. 2026-08-06 01:10 UTCGHSA enrichmentGHSA-jwxj-jjcm-8p4w · GitHub severity HIGH · GitHub CVSS 4.9
  71. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  72. 2026-08-04 23:21 UTCEG score recompute
  73. 2026-08-04 23:21 UTCGHSA enrichmentGHSA-jwxj-jjcm-8p4w · GitHub severity HIGH · GitHub CVSS 4.9
  74. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  75. 2026-08-04 10:39 UTCEPSS rescoreEPSS 0.2% · 11th percentile

Frequently asked(5)

What is CVE-2026-49198?
CVE-2026-49198 is a medium-severity vulnerability; its CVE record was published on May 29, 2026. Improper access control in the MQTT broker allows wildcard topic subscriptions, exposing all MQTT traffic to unauthorized actors.
When was the CVE record for CVE-2026-49198 published?
The CVE record for CVE-2026-49198 was published on May 29, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of July 21, 2026; the record at its source may have been updated since.
Is CVE-2026-49198 actively exploited?
CVE-2026-49198 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (26th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-49198?
CVE-2026-49198 has a CVSS v3 base score of 4.9 (NVD).
How do I remediate CVE-2026-49198?
No fix for CVE-2026-49198 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The CVE record's CNA (Acer Inc.) lists Acer Predator Connect W6x versions W6x_GBL_2.00.000005 and later as affected. No release containing a fix is confirmed on record. The vendor advisories EchelonGraph has for CVE-2026-49198 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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