CVE-2026-9054

CRITICALNVD 9.29.2
EchelonGraph scoreMEDIUM confidence

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

This critical-severity CVE scores 9.2 under NVD CVSS v3. EPSS exploit probability: 0.5% (41st percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3
Trending — 3 sources updated this week
9.2EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%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.

An attacker sending tcp, il, rudp, rudp, or gre packets with a length less than the header size would trigger a kernel panic.

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

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 (value × EchelonGraph’s weight)
Severity92% × 45%
The EG Score, 9.2 of 10.
Exploitation0.5% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (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 at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.5%
EPSS %ILE
41st
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track 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 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)14 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (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 22, 2026

Last Modified

July 23, 2026

Advisory Details (3)

Auto-updated Sep 15, 2026
No fix on record yet.
Web page

git: 9front

https://git.9front.org/plan9front/9front/f86917b75e9562f90545b7e484dbdcd748236952/commit.html
Web page

git: 9front

https://git.9front.org/plan9front/9front/7838d68969549f938cc8e80c0c2b4218cb12805c/commit.html
Web page

git: 9front

https://git.9front.org/plan9front/9front/70c97c334171c715df82774d1a47638abaca2db4/commit.html

Vendor Advisories for CVE-2026-9054(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 12× in last 7d / 32× 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 98 of 344 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. 2 repeat rows among the latest 100 are merged into the row they repeat. The 246 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  2. 2026-10-12 14:46 UTCEG score recompute
  3. 2026-10-12 05:08 UTCGHSA enrichmentGHSA-ggv5-f87x-rf79 · GitHub severity CRITICAL
  4. 2026-10-11 19:14 UTCEG score recompute
  5. 2026-10-11 16:30 UTCEG score recompute
  6. 2026-10-11 13:50 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  7. 2026-10-11 13:45 UTCEG score recompute
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  9. 2026-10-09 20:08 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  10. 2026-10-08 17:14 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  11. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  12. 2026-10-06 15:19 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  13. 2026-10-05 17:44 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  14. 2026-10-04 23:23 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  15. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  16. 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  17. 2026-10-01 19:51 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  18. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  19. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  20. 2026-09-27 13:49 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  21. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  22. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  23. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  24. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  25. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.3% · 21st percentile
Show 73 more
  1. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  2. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  3. 2026-09-17 19:32 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  4. 2026-09-16 14:09 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  5. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  6. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  7. 2026-09-13 16:48 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  8. 2026-09-12 15:02 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  9. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  10. 2026-09-11 09:38 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  11. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  12. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  13. 2026-09-06 13:48 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  14. 2026-09-05 15:31 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  15. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  16. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  17. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  18. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  19. 2026-08-30 19:18 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  20. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  21. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  22. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  23. 2026-08-26 14:47 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  24. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  25. 2026-08-24 14:18 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  26. 2026-08-23 20:57 UTCGHSA enrichmentGHSA-ggv5-f87x-rf79 · GitHub severity CRITICAL
  27. 2026-08-23 16:42 UTCEG score recompute
  28. 2026-08-23 16:42 UTCGHSA enrichmentGHSA-ggv5-f87x-rf79 · GitHub severity CRITICAL
  29. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  30. 2026-08-22 01:57 UTCEG score recompute
  31. 2026-08-22 01:57 UTCGHSA enrichmentGHSA-ggv5-f87x-rf79 · GitHub severity CRITICAL
  32. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  33. 2026-08-21 21:41 UTCEG score recompute
  34. 2026-08-21 21:41 UTCGHSA enrichmentGHSA-ggv5-f87x-rf79 · GitHub severity CRITICAL
  35. 2026-08-20 22:56 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  36. 2026-08-20 18:40 UTCEG score recompute
  37. 2026-08-20 18:40 UTCGHSA enrichmentGHSA-ggv5-f87x-rf79 · GitHub severity CRITICAL
  38. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  39. 2026-08-18 13:49 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  40. 2026-08-17 14:00 UTCEG score recompute
  41. 2026-08-17 14:00 UTCGHSA enrichmentGHSA-ggv5-f87x-rf79 · GitHub severity CRITICAL
  42. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  43. 2026-08-17 09:45 UTCGHSA enrichmentGHSA-ggv5-f87x-rf79 · GitHub severity CRITICAL
  44. 2026-08-16 16:49 UTCEG score recompute
  45. 2026-08-16 16:49 UTCGHSA enrichmentGHSA-ggv5-f87x-rf79 · GitHub severity CRITICAL
  46. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  47. 2026-08-16 11:50 UTCGHSA enrichmentGHSA-ggv5-f87x-rf79 · GitHub severity CRITICAL
  48. 2026-08-16 07:35 UTCGHSA enrichmentGHSA-ggv5-f87x-rf79 · GitHub severity CRITICAL
  49. 2026-08-16 03:20 UTCEG score recompute
  50. 2026-08-16 03:20 UTCGHSA enrichmentGHSA-ggv5-f87x-rf79 · GitHub severity CRITICAL
  51. 2026-08-16 02:15 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  52. 2026-08-15 03:24 UTCEG score recompute
  53. 2026-08-15 03:24 UTCGHSA enrichmentGHSA-ggv5-f87x-rf79 · GitHub severity CRITICAL
  54. 2026-08-15 01:31 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  55. 2026-08-14 23:09 UTCGHSA enrichmentGHSA-ggv5-f87x-rf79 · GitHub severity CRITICAL
  56. 2026-08-14 18:54 UTCGHSA enrichmentGHSA-ggv5-f87x-rf79 · GitHub severity CRITICAL
  57. 2026-08-14 14:39 UTCGHSA enrichmentGHSA-ggv5-f87x-rf79 · GitHub severity CRITICAL
  58. 2026-08-14 10:24 UTCGHSA enrichmentGHSA-ggv5-f87x-rf79 · GitHub severity CRITICAL
  59. 2026-08-14 06:09 UTCGHSA enrichmentGHSA-ggv5-f87x-rf79 · GitHub severity CRITICAL
  60. 2026-08-14 01:54 UTCEG score recompute
  61. 2026-08-14 01:54 UTCGHSA enrichmentGHSA-ggv5-f87x-rf79 · GitHub severity CRITICAL
  62. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  63. 2026-08-13 08:04 UTCGHSA enrichmentGHSA-ggv5-f87x-rf79 · GitHub severity CRITICAL
  64. 2026-08-13 02:58 UTCGHSA enrichmentGHSA-ggv5-f87x-rf79 · GitHub severity CRITICAL
  65. 2026-08-12 22:43 UTCGHSA enrichmentGHSA-ggv5-f87x-rf79 · GitHub severity CRITICAL
  66. 2026-08-12 18:28 UTCGHSA enrichmentGHSA-ggv5-f87x-rf79 · GitHub severity CRITICAL
  67. 2026-08-12 14:13 UTCEG score recompute
  68. 2026-08-12 14:13 UTCGHSA enrichmentGHSA-ggv5-f87x-rf79 · GitHub severity CRITICAL
  69. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  70. 2026-08-12 09:50 UTCGHSA enrichmentGHSA-ggv5-f87x-rf79 · GitHub severity CRITICAL
  71. 2026-08-11 22:54 UTCGHSA enrichmentGHSA-ggv5-f87x-rf79 · GitHub severity CRITICAL
  72. 2026-08-11 18:35 UTCGHSA enrichmentGHSA-ggv5-f87x-rf79 · GitHub severity CRITICAL
  73. 2026-08-11 13:47 UTCEG score recompute

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Frequently asked(5)

What is CVE-2026-9054?
CVE-2026-9054 is a critical-severity vulnerability; its CVE record was published on May 22, 2026. An attacker sending tcp, il, rudp, rudp, or gre packets with a length less than the header size would trigger a kernel panic.
When was CVE-2026-9054 made public?
CVE-2026-9054 was made public on May 19, 2026: that is the date its CVE record's CNA, 9front Systems, gives for when the vulnerability was made public. The CVE record itself was published on May 22, 2026. EchelonGraph's copy of the record carries a last-modified date of July 23, 2026; the record at its source may have been updated since.
Is CVE-2026-9054 actively exploited?
CVE-2026-9054 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (41st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-9054?
CVE-2026-9054 has a CVSS v3 base score of 9.2 (NVD).
How do I remediate CVE-2026-9054?
No fix for CVE-2026-9054 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-2026-9054 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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