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NVD / CVE Program· CNA microsoft

CVE-2026-77483: SQL Server Elevation of Privilege Vulnerability

HighCVSS 8.8 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 35/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.77% (FIRST EPSS); higher than 56.3% of all records.
  • Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Microsoft SQL Server 2017 for x64-based Systems (CU 31) 14.0.3550.4; Microsoft SQL Server 2017 for x64-based Systems (GDR) 14.0.2130.4; Microsoft SQL Server 2019 for x64-based Systems (CU 32) 15.0.4490.9.

Low priority for now. Upgrade to Microsoft SQL Server 2017 for x64-based Systems (CU 31) 14.0.3550.4; Microsoft SQL Server 2017 for x64-based Systems (GDR) 14.0.2130.4; Microsoft SQL Server 2019 for x64-based Systems (CU 32) 15.0.4490.9 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Weak authentication in SQL Server allows an authorized attacker to elevate privileges over a network.

Published
Sep 8, 2026
Updated
Nov 10, 2026
EPSS
0.7% · 56th percentile

Report tools

JSON

Action score

35

Monitor

Low priority for now.

CVSS
35 / 40 · 8.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.7%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · microsoft
8.8
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-77483

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
microsoftsql server 2017
microsoftsql server 2019
microsoftsql server 2022
microsoftsql server 2025

Versions reported by the vendor

Affected version ranges reported by the assigning authority (microsoft). Independent of NVD's CPE analysis and usually ahead of it.

  • Microsoft Microsoft SQL Server 2017 (CU 31)

    • 14.0.0 and later · before 14.0.3550.4affected

  • Microsoft Microsoft SQL Server 2017 (GDR)

    • 14.0.0 and later · before 14.0.2130.4affected

  • Microsoft Microsoft SQL Server 2019 (CU 32)

    • 15.0.0.0 and later · before 15.0.4490.9affected

  • Microsoft Microsoft SQL Server 2019 (GDR)

    • 15.0.0 and later · before 15.0.2190.7affected

  • Microsoft Microsoft SQL Server 2022 (CU 26)

    • 16.0.0.0 and later · before 16.0.4275.2affected

  • Microsoft Microsoft SQL Server 2022 (GDR)

    • 16.0.0 and later · before 16.0.1200.5affected

  • Microsoft Microsoft SQL Server 2025 (CU8)

    • 17.0.0.0 and later · before 17.0.4085.5affected

  • Microsoft Microsoft SQL Server 2025 for x64-based Systems (GDR)

    • 17.0.1050.2 and later · before 17.0.1135.8affected
Affected versions · NVD (8)

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • microsoft sql server 2017before 14.0.2130.4
  • microsoft sql server 201714.0.3006.16 and later · before 14.0.3550.4
  • microsoft sql server 2019before 15.0.2190.7
  • microsoft sql server 201915.0.4003.23 and later · before 15.0.4490.9
  • microsoft sql server 2022before 16.0.1200.5
  • microsoft sql server 202216.0.4003.1 and later · before 16.0.4275.2
  • microsoft sql server 2025before 17.0.1135.8
  • microsoft sql server 202517.0.4006.2 and later · before 17.0.4085.5

Same product

microsoft: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-67631Microsoft SQL Server Remote Code Execution Vulnerability
    39Monitor
  • CVE-2026-94512SQL Server Remote Code Execution Vulnerability
    35Monitor
  • CVE-2026-78442Windows OLE DB Remote Code Execution Vulnerability
    35Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2026-77481Sep 8, 2026 · Microsoft SQL Server Remote Code Execution Vulnerability
    35Monitor
  • ← EarlierCVE-2026-77482Sep 8, 2026 · Microsoft SQL Server Remote Code Execution Vulnerability
    35Monitor
  • Later →CVE-2026-77485Sep 8, 2026 · SQL Server Elevation of Privilege Vulnerability
    28Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Microsoft SQL Server 2017 for x64-based Systems (CU 31)14.0.3550.4 · KB5122774Microsoft (MSRC)
Microsoft SQL Server 2017 for x64-based Systems (GDR)14.0.2130.4 · KB5122775Microsoft (MSRC)
Microsoft SQL Server 2019 for x64-based Systems (CU 32)15.0.4490.9 · KB5122772Microsoft (MSRC)
Microsoft SQL Server 2019 for x64-based Systems (GDR)15.0.2190.7 · KB5122773Microsoft (MSRC)
Microsoft SQL Server 2022 for x64-based Systems (CU 26)16.0.4275.2 · KB5122768Microsoft (MSRC)
Microsoft SQL Server 2022 for x64-based Systems (GDR)16.0.1200.5 · KB5122771Microsoft (MSRC)
Microsoft SQL Server 2025 for x64-based Systems (CU8)17.0.4085.5 · KB5122769Microsoft (MSRC)
Microsoft SQL Server 2025 for x64-based Systems (GDR)17.0.1135.8 · KB5122770Microsoft (MSRC)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

  • CVE-2026-668190 days apartMicrosoft SQL Server Elevation of Privilege Vulnerability
    35Monitor
  • CVE-2026-673850 days apartMicrosoft SQL Server Remote Code Execution Vulnerability
    35Monitor
  • CVE-2026-687750 days apartMicrosoft SQL Server Remote Code Execution Vulnerability
    35Monitor
  • CVE-2026-687870 days apartMicrosoft SQL Server Remote Code Execution Vulnerability
    31Monitor

Not on record for this CVE: patch commit or PR link · researcher credit · public bounty program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-1390 · Weak Authentication

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records