CVE-2026-12258

CRITICALPre-NVD 9.29.2—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.2 under the CNA's CVSS (NVD's own analysis pending). EPSS exploit probability: 0.4% (31st percentile of EPSS-scored CVEs). 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: cna:incibe, epss
Trending — 3 sources updated this week
9.2EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 9.2Exploit: None knownExposed services: Not assessed

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

Inadequate access control in Hiperdino’s REST v1.0 API. The public endpoint ‘customer/check’ could allow an authenticated attacker to enter a telephone number or an email address. When the value entered belongs to a registered customer, the service returns the associated information (email address and telephone number). No authentication is required beyond a static bearer token, and there is no rate limiting or generic error handling. Successful exploitation of this vulnerability could allow a remote attacker to enumerate a user’s contact details, although this would require obtaining a valid static bearer token, constituting an information disclosure vulnerability.

CVSS v3
9.2
EG Score
9.2CRITICALmedium confidence
EG Risk
57
EG Risk 57/100CISA SSVC

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
Severity92% × 45%
Exploitation0% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.4%
EPSS %ILE
31st
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 14, 2026

Last Modified

September 28, 2026

Advisory Details (1)

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

Inadequate access control in the Hiperdino REST API | INCIBE-CERT | INCIBE

https://www.incibe.es/en/incibe-cert/notices/aviso/inadequate-access-control-hiperdino-rest-api

Vendor Advisories for CVE-2026-12258(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 53× in last 7d / 156× 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 156 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-12258?
CVE-2026-12258 is a critical vulnerability published on September 14, 2026. Inadequate access control in Hiperdino’s REST v1.0 API. The public endpoint ‘customer/check’ could allow an authenticated attacker to enter a telephone number or an email address. When the value entered belongs to a registered customer, the service returns the associated information (email address…
When was CVE-2026-12258 disclosed?
CVE-2026-12258 was first published on September 14, 2026, with the most recent update on September 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-12258 actively exploited?
CVE-2026-12258 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (31st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-12258?
CVE-2026-12258 has a CVSS base score of 9.2 (the CNA's own assessment, by incibe; NVD's own analysis pending).
How do I remediate CVE-2026-12258?
No fix for CVE-2026-12258 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 vendor advisories EchelonGraph has for CVE-2026-12258 are linked in the Vendor Advisories panel on this page.

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