CVE-2026-49197

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-05-29. 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
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 9.8Exploit: NoneExposed: 0

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

Web endpoints intended for the Acer Connect app improperly validate the HTTP Authorization header, failing to block requests when Base64 decoding fails.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
25.3%
KEV
Not listed

Published

May 29, 2026

Last Modified

June 8, 2026

Advisory Details (1)

Auto-updated Jun 20, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic🔴 Active Exploitation

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

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

Vendor Advisories for CVE-2026-49197(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 19× in last 7d / 149× 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 374 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-49197?
CVE-2026-49197 is a critical vulnerability published on May 29, 2026. Web endpoints intended for the Acer Connect app improperly validate the HTTP Authorization header, failing to block requests when Base64 decoding fails.
When was CVE-2026-49197 disclosed?
CVE-2026-49197 was first published in the National Vulnerability Database on May 29, 2026, with the most recent update on June 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-49197 actively exploited?
CVE-2026-49197 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 25.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-49197?
CVE-2026-49197 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-49197?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-49197, 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-2026-49197

Explore →

Is Your Infrastructure Affected by CVE-2026-49197?

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

Start Free Scan →Browse All CVEs