CVE-2026-3356

CRITICALPre-NVD 9.39.3—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 68% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
9.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.3Exploit: None knownExposed: 0

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

The MS27102A Remote Spectrum Monitor is vulnerable to an authentication bypass that allows unauthorized users to access and manipulate its management interface. Because the device provides no mechanism to enable or configure authentication, the issue is inherent to its design rather than a deployment error.

CVSS v3
9.3
EG Score
9.3(medium)
EG Risk
47(Track)
EG Risk 47/100SSVC: 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
Severity93% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
32%
KEV
Not listed

Published

March 31, 2026

Last Modified

July 24, 2026

Advisory Details (1)

Auto-updated Sep 14, 2026
Patch available. Sources: cisa.
cisa Patch Available

Anritsu Remote Spectrum Monitor | CISA

https://www.cisa.gov/news-events/ics-advisories/icsa-26-090-01

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 28× 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 101 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-3356?
CVE-2026-3356 is a critical vulnerability published on March 31, 2026. The MS27102A Remote Spectrum Monitor is vulnerable to an authentication bypass that allows unauthorized users to access and manipulate its management interface. Because the device provides no mechanism to enable or configure authentication, the issue is inherent to its design rather than a…
When was CVE-2026-3356 disclosed?
CVE-2026-3356 was first published in the National Vulnerability Database on March 31, 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-2026-3356 actively exploited?
CVE-2026-3356 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 67.8% of all scored CVEs.
What is the CVSS score of CVE-2026-3356?
CVE-2026-3356 has a CVSS v3 base score of 9.3 (NVD).
How do I remediate CVE-2026-3356?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-3356, 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.

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