CVE-2026-54118

CRITICALPre-NVD 9.89.8
EchelonGraph scoreMEDIUM confidence

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

This critical-severity CVE scores 9.8 under the CNA's CVSS (NVD's own analysis pending). EPSS exploit probability: 1.5% (74th percentile of EPSS-scored CVEs). GitHub Security Advisory CVSS 8.8 is lower than this score; a lower GitHub score revises it only when its advisory is newer than the CVE record's last change, and this advisory (published 2026-07-14) is not newer than that change (2026-10-08), so it does not.

Triggered by: Headline CVSS from the CNA's CVSS
Sources: the CNA's CVSS, EPSS, GitHub Security Advisory
Trending — 4 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1.5%CVSS: 9.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Deserialization of untrusted data in SQL Server allows an unauthorized attacker to execute code over a network.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
45
EG Risk 45/100

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)
Severity98% × 45%
The EG Score, 9.8 of 10.
Exploitation1.5% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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: A fix is available. Apply it within your standard update timelines.
EPSS PROB
1.5%
EPSS %ILE
74th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (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

July 14, 2026

Last Modified

October 8, 2026

Advisory Details (1)

Auto-updated Oct 8, 2026
Patch available. Sources: microsoft.
MicrosoftMentions a patch (unverified)

Security Update Guide - Microsoft Security Response Center

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54118

Vendor Advisories for CVE-2026-54118(2)

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 21× in last 7d / 67× 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 100 of 434 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. None are among the latest 100 rows. The 334 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-14 08:52 UTCEG score recompute
  2. 2026-10-14 08:52 UTCGHSA enrichmentGHSA-c2qv-v7mm-7vwh · GitHub severity HIGH · GitHub CVSS 8.8
  3. 2026-10-13 16:34 UTCEPSS rescoreEPSS 1.5% · 74th percentile
  4. 2026-10-13 04:59 UTCEG score recompute
  5. 2026-10-13 04:59 UTCVendor advisory
  6. 2026-10-13 04:59 UTCGHSA enrichmentGHSA-c2qv-v7mm-7vwh · GitHub severity HIGH · GitHub CVSS 8.8
  7. 2026-10-12 16:34 UTCEPSS rescoreEPSS 1.5% · 74th percentile
  8. 2026-10-12 15:56 UTCEG score recompute
  9. 2026-10-12 07:00 UTCVendor advisory
  10. 2026-10-12 06:59 UTCGHSA enrichmentGHSA-c2qv-v7mm-7vwh · GitHub severity HIGH · GitHub CVSS 8.8
  11. 2026-10-11 19:40 UTCEG score recompute
  12. 2026-10-11 16:55 UTCEG score recompute
  13. 2026-10-11 14:18 UTCEG score recompute
  14. 2026-10-11 13:49 UTCEPSS rescoreEPSS 1.5% · 74th percentile
  15. 2026-10-10 20:00 UTCEPSS rescoreEPSS 1.5% · 74th percentile
  16. 2026-10-09 20:07 UTCEPSS rescoreEPSS 1.5% · 74th percentile
  17. 2026-10-08 18:29 UTCEG score recompute
  18. 2026-10-08 18:29 UTCVendor advisory
  19. 2026-10-08 18:28 UTCGHSA enrichmentGHSA-c2qv-v7mm-7vwh · GitHub severity HIGH · GitHub CVSS 8.8
  20. 2026-10-08 17:12 UTCEPSS rescoreEPSS 1.5% · 74th percentile
  21. 2026-10-07 23:48 UTCEPSS rescoreEPSS 1.5% · 74th percentile
  22. 2026-10-06 15:18 UTCEPSS rescoreEPSS 1.5% · 73rd percentile
  23. 2026-10-05 17:43 UTCEPSS rescoreEPSS 1.5% · 73rd percentile
  24. 2026-10-04 23:22 UTCEPSS rescoreEPSS 1.5% · 73rd percentile
  25. 2026-10-03 14:26 UTCEPSS rescoreEPSS 1.5% · 73rd percentile
Show 75 more
  1. 2026-10-02 17:56 UTCEPSS rescoreEPSS 1.5% · 73rd percentile
  2. 2026-10-01 19:50 UTCEPSS rescoreEPSS 1.5% · 73rd percentile
  3. 2026-10-01 13:17 UTCEG score recompute
  4. 2026-10-01 13:17 UTCVendor advisory
  5. 2026-10-01 13:17 UTCGHSA enrichmentGHSA-c2qv-v7mm-7vwh · GitHub severity HIGH · GitHub CVSS 8.8
  6. 2026-09-30 15:03 UTCEPSS rescoreEPSS 1.5% · 73rd percentile
  7. 2026-09-29 15:22 UTCEPSS rescoreEPSS 1.5% · 73rd percentile
  8. 2026-09-28 13:51 UTCEPSS rescoreEPSS 1.5% · 73rd percentile
  9. 2026-09-28 13:19 UTCVendor advisory
  10. 2026-09-28 13:19 UTCGHSA enrichmentGHSA-c2qv-v7mm-7vwh · GitHub severity HIGH · GitHub CVSS 8.8
  11. 2026-09-28 09:18 UTCEG score recompute
  12. 2026-09-28 09:18 UTCVendor advisory
  13. 2026-09-28 09:18 UTCGHSA enrichmentGHSA-c2qv-v7mm-7vwh · GitHub severity HIGH · GitHub CVSS 8.8
  14. 2026-09-27 13:48 UTCEPSS rescoreEPSS 1.5% · 73rd percentile
  15. 2026-09-26 15:59 UTCEPSS rescoreEPSS 1.5% · 73rd percentile
  16. 2026-09-25 19:10 UTCEG score recompute
  17. 2026-09-25 19:10 UTCVendor advisory
  18. 2026-09-25 19:10 UTCGHSA enrichmentGHSA-c2qv-v7mm-7vwh · GitHub severity HIGH · GitHub CVSS 8.8
  19. 2026-09-24 14:04 UTCEPSS rescoreEPSS 1.5% · 73rd percentile
  20. 2026-09-24 09:22 UTCEG score recompute
  21. 2026-09-24 09:22 UTCVendor advisory
  22. 2026-09-24 09:22 UTCGHSA enrichmentGHSA-c2qv-v7mm-7vwh · GitHub severity HIGH · GitHub CVSS 8.8
  23. 2026-09-23 17:54 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  24. 2026-09-23 11:54 UTCVendor advisory
  25. 2026-09-23 11:54 UTCGHSA enrichmentGHSA-c2qv-v7mm-7vwh · GitHub severity HIGH · GitHub CVSS 8.8
  26. 2026-09-23 07:53 UTCVendor advisory
  27. 2026-09-23 07:53 UTCGHSA enrichmentGHSA-c2qv-v7mm-7vwh · GitHub severity HIGH · GitHub CVSS 8.8
  28. 2026-09-23 03:52 UTCEG score recompute
  29. 2026-09-23 03:52 UTCVendor advisory
  30. 2026-09-23 03:52 UTCGHSA enrichmentGHSA-c2qv-v7mm-7vwh · GitHub severity HIGH · GitHub CVSS 8.8
  31. 2026-09-20 20:16 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  32. 2026-09-18 19:28 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  33. 2026-09-18 10:02 UTCVendor advisory
  34. 2026-09-18 10:02 UTCGHSA enrichmentGHSA-c2qv-v7mm-7vwh · GitHub severity HIGH · GitHub CVSS 8.8
  35. 2026-09-18 04:53 UTCVendor advisory
  36. 2026-09-18 04:53 UTCGHSA enrichmentGHSA-c2qv-v7mm-7vwh · GitHub severity HIGH · GitHub CVSS 8.8
  37. 2026-09-17 23:18 UTCEG score recompute
  38. 2026-09-17 23:18 UTCVendor advisory
  39. 2026-09-17 23:18 UTCGHSA enrichmentGHSA-c2qv-v7mm-7vwh · GitHub severity HIGH · GitHub CVSS 8.8
  40. 2026-09-17 19:31 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  41. 2026-09-16 14:08 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  42. 2026-09-16 05:15 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  43. 2026-09-14 11:34 UTCVendor advisory
  44. 2026-09-14 11:34 UTCGHSA enrichmentGHSA-c2qv-v7mm-7vwh · GitHub severity HIGH · GitHub CVSS 8.8
  45. 2026-09-14 07:27 UTCVendor advisory
  46. 2026-09-14 07:27 UTCGHSA enrichmentGHSA-c2qv-v7mm-7vwh · GitHub severity HIGH · GitHub CVSS 8.8
  47. 2026-09-14 03:26 UTCVendor advisory
  48. 2026-09-14 03:26 UTCGHSA enrichmentGHSA-c2qv-v7mm-7vwh · GitHub severity HIGH · GitHub CVSS 8.8
  49. 2026-09-13 23:25 UTCEG score recompute
  50. 2026-09-13 23:25 UTCVendor advisory
  51. 2026-09-13 23:25 UTCGHSA enrichmentGHSA-c2qv-v7mm-7vwh · GitHub severity HIGH · GitHub CVSS 8.8
  52. 2026-09-13 16:47 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  53. 2026-09-13 16:28 UTCVendor advisory
  54. 2026-09-13 16:28 UTCGHSA enrichmentGHSA-c2qv-v7mm-7vwh · GitHub severity HIGH · GitHub CVSS 8.8
  55. 2026-09-13 11:52 UTCVendor advisory
  56. 2026-09-13 11:52 UTCGHSA enrichmentGHSA-c2qv-v7mm-7vwh · GitHub severity HIGH · GitHub CVSS 8.8
  57. 2026-09-13 07:51 UTCEG score recompute
  58. 2026-09-13 07:51 UTCVendor advisory
  59. 2026-09-13 07:51 UTCGHSA enrichmentGHSA-c2qv-v7mm-7vwh · GitHub severity HIGH · GitHub CVSS 8.8
  60. 2026-09-12 13:17 UTCVendor advisory
  61. 2026-09-12 13:17 UTCGHSA enrichmentGHSA-c2qv-v7mm-7vwh · GitHub severity HIGH · GitHub CVSS 8.8
  62. 2026-09-12 07:27 UTCVendor advisory
  63. 2026-09-12 07:27 UTCGHSA enrichmentGHSA-c2qv-v7mm-7vwh · GitHub severity HIGH · GitHub CVSS 8.8
  64. 2026-09-12 01:43 UTCEG score recompute
  65. 2026-09-12 01:43 UTCVendor advisory
  66. 2026-09-12 01:43 UTCGHSA enrichmentGHSA-c2qv-v7mm-7vwh · GitHub severity HIGH · GitHub CVSS 8.8
  67. 2026-09-11 14:53 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  68. 2026-09-10 09:35 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  69. 2026-09-09 22:54 UTCGHSA enrichmentGHSA-c2qv-v7mm-7vwh · GitHub severity HIGH · GitHub CVSS 8.8
  70. 2026-09-08 22:49 UTCEG score recompute
  71. 2026-09-08 22:49 UTCVendor advisory
  72. 2026-09-08 22:49 UTCGHSA enrichmentGHSA-c2qv-v7mm-7vwh · GitHub severity HIGH · GitHub CVSS 8.8
  73. 2026-09-08 22:01 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  74. 2026-09-08 01:39 UTCEG score recompute
  75. 2026-09-08 01:39 UTCVendor advisory

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-54118?
CVE-2026-54118 is a critical-severity vulnerability; its CVE record was published on July 14, 2026. Deserialization of untrusted data in SQL Server allows an unauthorized attacker to execute code over a network.
When was CVE-2026-54118 made public?
CVE-2026-54118 was made public on July 14, 2026: that is the date its CVE record's CNA, Microsoft Corporation, gives for when the vulnerability was made public. The CVE record itself was published on July 14, 2026. EchelonGraph's copy of the record carries a last-modified date of October 8, 2026; the record at its source may have been updated since.
Is CVE-2026-54118 actively exploited?
CVE-2026-54118 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.5% probability of exploitation in the next 30 days (74th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-54118?
CVE-2026-54118 has a CVSS base score of 9.8 (the CNA's own assessment, by microsoft; NVD's own analysis pending).
How do I remediate CVE-2026-54118?
A fix for CVE-2026-54118 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-54118 are linked in the Vendor Advisories panel on this page.

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