CVE-2026-12855

HIGHPre-NVD 8.28.2—
EchelonGraph scoreHIGH confidence

Score 8.2 from GitHub Security Advisory (severity: HIGH) published 2026-09-09. A secondary CVSS source baseline 8.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.2EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 8.2Exploit: None knownExposed services: Not assessed

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

Unvalidated memory boundary could result in arbitrary code execution. The vulnerability exists in the code developed specifically for HP projects.

CVSS v3
8.2
EG Score
8.2HIGHhigh confidence
EG Risk
37
EG Risk 37/100CISA 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
Severity82% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* 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, and watch the vendor's advisory for the fix.
EPSS PROB
0.1%
EPSS %ILE
1st
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* 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, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (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 9, 2026

Last Modified

October 1, 2026

Advisory Details (1)

Auto-updated Sep 9, 2026
No patch confirmed yet.
generic

SA-2026009 - Insyde Software

https://www.insyde.com/security-pledge/sa-2026009/

Vendor Advisories for CVE-2026-12855(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 26× in last 7d / 97× 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.

  1. 2026-10-04 07:23 UTCGHSA enrichment
  2. 2026-10-03 19:10 UTCEG score recompute
  3. 2026-10-03 19:10 UTCGHSA enrichment
  4. 2026-10-03 14:25 UTCEPSS rescore
  5. 2026-10-03 06:17 UTCGHSA enrichment
  6. 2026-10-02 18:04 UTCEG score recompute
  7. 2026-10-02 18:04 UTCGHSA enrichment
  8. 2026-10-02 05:50 UTCEG score recompute
  9. 2026-10-02 05:50 UTCGHSA enrichment
  10. 2026-10-01 19:49 UTCEPSS rescore
  11. 2026-10-01 16:41 UTCGHSA enrichment
  12. 2026-10-01 15:18 UTCGHSA enrichment
  13. 2026-10-01 03:05 UTCEG score recompute
  14. 2026-10-01 03:04 UTCGHSA enrichment
  15. 2026-09-30 15:02 UTCEPSS rescore
  16. 2026-09-30 14:51 UTCGHSA enrichment
  17. 2026-09-30 02:07 UTCEG score recompute
  18. 2026-09-30 02:07 UTCGHSA enrichment
  19. 2026-09-29 15:20 UTCEPSS rescore
  20. 2026-09-29 11:27 UTCGHSA enrichment
  21. 2026-09-28 22:59 UTCEG score recompute
  22. 2026-09-28 22:59 UTCGHSA enrichment
  23. 2026-09-28 13:50 UTCEPSS rescore
  24. 2026-09-28 10:43 UTCGHSA enrichment
  25. 2026-09-27 22:24 UTCEG score recompute
Show 72 more
  1. 2026-09-27 22:24 UTCGHSA enrichment
  2. 2026-09-27 10:10 UTCGHSA enrichment
  3. 2026-09-26 21:56 UTCEG score recompute
  4. 2026-09-26 21:56 UTCGHSA enrichment
  5. 2026-09-26 15:58 UTCEPSS rescore
  6. 2026-09-26 09:43 UTCEG score recompute
  7. 2026-09-26 09:43 UTCGHSA enrichment
  8. 2026-09-25 21:29 UTCGHSA enrichment
  9. 2026-09-25 05:15 UTCGHSA enrichment
  10. 2026-09-24 17:02 UTCEG score recompute
  11. 2026-09-24 17:02 UTCGHSA enrichment
  12. 2026-09-24 04:48 UTCGHSA enrichment
  13. 2026-09-23 16:35 UTCEG score recompute
  14. 2026-09-23 16:35 UTCGHSA enrichment
  15. 2026-09-23 13:47 UTCEPSS rescore
  16. 2026-09-23 04:21 UTCGHSA enrichment
  17. 2026-09-22 16:07 UTCEG score recompute
  18. 2026-09-22 16:07 UTCGHSA enrichment
  19. 2026-09-22 03:51 UTCEG score recompute
  20. 2026-09-22 03:51 UTCGHSA enrichment
  21. 2026-09-21 15:38 UTCGHSA enrichment
  22. 2026-09-21 03:24 UTCEG score recompute
  23. 2026-09-21 03:24 UTCGHSA enrichment
  24. 2026-09-20 20:15 UTCEPSS rescore
  25. 2026-09-20 15:10 UTCGHSA enrichment
  26. 2026-09-20 02:56 UTCEG score recompute
  27. 2026-09-20 02:56 UTCGHSA enrichment
  28. 2026-09-19 14:43 UTCGHSA enrichment
  29. 2026-09-19 02:30 UTCEG score recompute
  30. 2026-09-19 02:30 UTCGHSA enrichment
  31. 2026-09-18 19:27 UTCEPSS rescore
  32. 2026-09-18 14:17 UTCGHSA enrichment
  33. 2026-09-18 01:56 UTCEG score recompute
  34. 2026-09-18 01:56 UTCGHSA enrichment
  35. 2026-09-17 13:42 UTCGHSA enrichment
  36. 2026-09-17 01:28 UTCEG score recompute
  37. 2026-09-17 01:28 UTCGHSA enrichment
  38. 2026-09-16 13:15 UTCEG score recompute
  39. 2026-09-16 13:15 UTCGHSA enrichment
  40. 2026-09-16 05:14 UTCEPSS rescore
  41. 2026-09-16 00:58 UTCGHSA enrichment
  42. 2026-09-15 12:45 UTCEG score recompute
  43. 2026-09-15 12:45 UTCGHSA enrichment
  44. 2026-09-15 00:31 UTCGHSA enrichment
  45. 2026-09-14 12:18 UTCGHSA enrichment
  46. 2026-09-14 00:05 UTCEG score recompute
  47. 2026-09-14 00:05 UTCGHSA enrichment
  48. 2026-09-13 16:46 UTCEPSS rescore
  49. 2026-09-13 11:52 UTCGHSA enrichment
  50. 2026-09-12 23:39 UTCEG score recompute
  51. 2026-09-12 23:39 UTCGHSA enrichment
  52. 2026-09-12 15:00 UTCEPSS rescore
  53. 2026-09-12 11:26 UTCGHSA enrichment
  54. 2026-09-11 23:12 UTCEG score recompute
  55. 2026-09-11 23:12 UTCGHSA enrichment
  56. 2026-09-11 14:52 UTCEPSS rescore
  57. 2026-09-11 10:11 UTCEG score recompute
  58. 2026-09-11 10:11 UTCGHSA enrichment
  59. 2026-09-11 09:36 UTCEPSS rescore
  60. 2026-09-10 21:57 UTCGHSA enrichment
  61. 2026-09-10 09:43 UTCEG score recompute
  62. 2026-09-10 09:43 UTCGHSA enrichment
  63. 2026-09-10 09:34 UTCEPSS rescore
  64. 2026-09-09 21:30 UTCEG score recompute
  65. 2026-09-09 21:30 UTCGHSA enrichment
  66. 2026-09-09 20:55 UTCEG score recompute
  67. 2026-09-09 20:55 UTCGHSA enrichment
  68. 2026-09-09 15:51 UTCEG score recompute
  69. 2026-09-09 15:51 UTCGHSA enrichment
  70. 2026-09-09 04:37 UTCEG score recompute
  71. 2026-09-09 04:02 UTCEG score recompute
  72. 2026-09-09 04:02 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-12855?
CVE-2026-12855 is a high vulnerability published on September 9, 2026. Unvalidated memory boundary could result in arbitrary code execution. The vulnerability exists in the code developed specifically for HP projects.
When was CVE-2026-12855 disclosed?
CVE-2026-12855 was first published on September 9, 2026, with the most recent update on October 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-12855 actively exploited?
CVE-2026-12855 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (1st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-12855?
CVE-2026-12855 has a CVSS base score of 8.2 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-12855?
No fix for CVE-2026-12855 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-2026-12855 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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