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CVE-2026-96956

CVE-2026-96956

waiting for further signalsZero needs more public information before it can validate it.

GHSA-wmj3-qpc2-vxj4 ↗EUVD-2026-100707 ↗

no check availablenot proven exploitable
cve.orgpublic pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).kevAttacks confirmed in the real world.
Microsoft SQL Server 2017 (GDR) >= 14.0.0, < 14.0.2140.2; >= 14.0.3006.16, < 14.0.3560.2; >= 15.0.0, < 15.0.2200.2; >= 15.0.4003.23, < 15.0.4500.2; >= 16.0.0, < 16.0.1210.3; >= 16.0.4003.1, < 16.0.4305.5; >= 17.0.4006.2, < 17.0.5015.4; >= 17.0.1050.2, < 17.0.1145.4
fixed in 14.0.2140.2, 14.0.3560.2, 15.0.2200.2, 15.0.4500.2, 16.0.1210.3, 16.0.4305.5, 17.0.5015.4, 17.0.1145.4
ETK-2026-1834Zero's internal tracking ID, independent of the CVE number., permanent identifier
cvss8.0cna vendorCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
8h 04msince last run
18mAI analysisAnalysis: how long the AI spent reversing this signal.
timeline
0 = cve.org publication
trigger signal (cve.org) +0hwaiting for further signals+205h42m
0
+2h
+4h
+6h
+8h
+10h

description

Affected SQL Server 2017, 2019, 2022, and 2025 servicing releases contain a stack-based buffer overflow. An authorized attacker with network access may be able to elevate privileges; authentication is required.

mitigation

Update affected SQL Server installations to the applicable fixed build: 2017 GDR 14.0.2140.2 or CU31 14.0.3560.2; 2019 GDR 15.0.2200.2 or CU32 15.0.4500.2; 2022 GDR 16.0.1210.3 or CU27 16.0.4305.5; or 2025 GDR 17.0.1145.4 or CU9 17.0.5015.4.

fixed in 14.0.2140.2, 14.0.3560.2, 15.0.2200.2, 15.0.4500.2, 16.0.1210.3, 16.0.4305.5, 17.0.5015.4, 17.0.1145.4

check
no
exploit
no
automationDeterministic: a check that runs on its own, the same request on every target. Contextual: an agentic technique that needs to be applied per target, for bugs that depend on contextual flows.
contextual
auth requiredWhether an attacker needs an account first, based on the CVSS vector's Privileges Required.
yes, high privileges
EPSSEstimate of the chance this CVE is exploited in the next 30 days. Refreshed daily.
0.42%35th percentile
agent run time
18m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
2026-10-13 20:35Z
Δ to public pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).
–
Δ to kevAttacks confirmed in the real world.
–

outcome

Contextual: an exploit technique exists, but no deterministic check could cover this one.

source signals

Public signals that triggered or updated the pipeline. These are inputs for the deltas above.

  1. 2026-10-13 20:35Z
    ghsa: trigger signal, started the run
    https://github.com/advisories/GHSA-wmj3-qpc2-vxj4
  2. 2026-10-13 20:35Z

this entry in the feed

GET /api/v1/feed/CVE-2026-96956

{
  "etk_id": "ETK-2026-1834",
  "cve_id": "CVE-2026-96956",
  "display_id": "CVE-2026-96956",
  "ghsa_id": "GHSA-wmj3-qpc2-vxj4",
  "euvd_id": "EUVD-2026-100707",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Stack-based buffer overflow in Microsoft SQL Server",
  "summary": "Affected SQL Server 2017, 2019, 2022, and 2025 servicing releases contain a stack-based buffer overflow. An authorized attacker with network access may be able to elevate privileges; authentication is required.",
  "mitigation": "Update affected SQL Server installations to the applicable fixed build: 2017 GDR 14.0.2140.2 or CU31 14.0.3560.2; 2019 GDR 15.0.2200.2 or CU32 15.0.4500.2; 2022 GDR 16.0.1210.3 or CU27 16.0.4305.5; or 2025 GDR 17.0.1145.4 or CU9 17.0.5015.4.",
  "vendor": "Microsoft",
  "product": "Microsoft SQL Server 2017 (GDR)",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 14.0.0, < 14.0.2140.2"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "14.0.2140.2"
      ],
      "package_name": "Microsoft SQL Server 2017 (GDR)",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 14.0.3006.16, < 14.0.3560.2"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "14.0.3560.2"
      ],
      "package_name": "Microsoft SQL Server 2017 for x64-based Systems (CU31)",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 15.0.0, < 15.0.2200.2"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "15.0.2200.2"
      ],
      "package_name": "Microsoft SQL Server 2019 (GDR)",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 15.0.4003.23, < 15.0.4500.2"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "15.0.4500.2"
      ],
      "package_name": "Microsoft SQL Server 2019 for x64-based Systems (CU32)",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 16.0.0, < 16.0.1210.3"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "16.0.1210.3"
      ],
      "package_name": "Microsoft SQL Server 2022 (GDR)",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 16.0.4003.1, < 16.0.4305.5"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "16.0.4305.5"
      ],
      "package_name": "Microsoft SQL Server 2022 for x64-based Systems (CU27)",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 17.0.4006.2, < 17.0.5015.4"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "17.0.5015.4"
      ],
      "package_name": "Microsoft SQL Server 2025 for x64-based Systems (CU9)",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 17.0.1050.2, < 17.0.1145.4"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "17.0.1145.4"
      ],
      "package_name": "Microsoft SQL Server 2025 for x64-based Systems (GDR)",
      "purl": null
    }
  ],
  "cwes": null,
  "cvss_score": 8,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H",
  "epss_score": 0.0042,
  "epss_percentile": 0.3545,
  "epss_asof": "2026-10-21",
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 17.5302215,
  "t0_at": "2026-10-13T20:35:45.884000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-13T20:35:45.884000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-13T20:35:45.884000+00:00",
      "url": "https://github.com/advisories/GHSA-wmj3-qpc2-vxj4"
    }
  }
}

published 2026-10-17 02:53Z
last change 2026-10-22 14:39Z

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