CVE-2026-77488medium5.5

Microsoft SQL Server Information Disclosure Vulnerability

Impact

Microsoft SQL Server has an integer underflow vulnerability, allowing an authorized attacker to disclose information locally, affecting versions 2017, 2019, 2022, and 2025. The weakness is due to integer underflow (wrap or wraparound).

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

Microsoft · microsoft

Microsoft SQL Server 2017 (CU 31)

1 range

microsoft version evidence

Platforms: x64-based Systems

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

affected

14.0.0 → before 14.0.3550.4

custom versions

Other versions: unknown

Microsoft · microsoft

Microsoft SQL Server 2017 (GDR)

1 range

microsoft version evidence

Platforms: x64-based Systems

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

affected

14.0.0 → before 14.0.2130.4

custom versions

Other versions: unknown

Microsoft · microsoft

Microsoft SQL Server 2019 (CU 32)

1 range

microsoft version evidence

Platforms: x64-based Systems

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

affected

15.0.0.0 → before 15.0.4490.9

custom versions

Other versions: unknown

Microsoft · microsoft

Microsoft SQL Server 2019 (GDR)

1 range

microsoft version evidence

Platforms: x64-based Systems

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

affected

15.0.0 → before 15.0.2190.7

custom versions

Other versions: unknown

Microsoft · microsoft

Microsoft SQL Server 2022 (CU 26)

1 range

microsoft version evidence

Platforms: x64-based Systems

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

affected

16.0.0.0 → before 16.0.4275.2

custom versions

Other versions: unknown

Microsoft · microsoft

Microsoft SQL Server 2022 (GDR)

1 range

microsoft version evidence

Platforms: x64-based Systems

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

affected

16.0.0 → before 16.0.1200.5

custom versions

Other versions: unknown

Microsoft · microsoft

Microsoft SQL Server 2025 (CU8)

1 range

microsoft version evidence

Platforms: x64-based Systems

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

affected

17.0.0.0 → before 17.0.4085.5

custom versions

Other versions: unknown

Microsoft · microsoft

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

1 range

microsoft version evidence

Platforms: x64-based Systems

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

affected

17.0.1050.2 → before 17.0.1135.8

custom versions

Other versions: unknown

Original source description

Integer underflow (wrap or wraparound) in SQL Server allows an authorized attacker to disclose information locally.

Inside the record

Evidence available

Package identity · not supplied

Version evidence

Remediation guidance · not supplied

Weakness classification

Additional publishers

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-77488

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-191 ↗

CWE-191: Integer Underflow (Wrap or Wraparound)

microsoft

Environment requirements

These conditions apply together as specified by the publisher. A matching product name alone does not establish exposure.

microsoft · platform conditions

Any condition may hold

Vulnerable product

cpe:2.3:a:microsoft:sql_server_2025:*:*:*:*:*:*:x64:*

From (inclusive): 17.0.0.0

After:

Through (inclusive):

Before: 17.0.4085.5

Vulnerable product

cpe:2.3:a:microsoft:sql_server_2022:*:*:*:*:*:*:x64:*

From (inclusive): 16.0.0.0

After:

Through (inclusive):

Before: 16.0.4275.2

Vulnerable product

cpe:2.3:a:microsoft:sql_server_2017:*:-:*:*:*:*:x64:*

From (inclusive): 14.0.0

After:

Through (inclusive):

Before: 14.0.2130.4

Vulnerable product

cpe:2.3:a:microsoft:sql_server_2019:*:*:*:*:*:*:x64:*

From (inclusive): 15.0.0

After:

Through (inclusive):

Before: 15.0.2190.7

Vulnerable product

cpe:2.3:a:microsoft:sql_server_2017:*:-:*:*:*:*:x64:*

From (inclusive): 14.0.0

After:

Through (inclusive):

Before: 14.0.3550.4

Vulnerable product

cpe:2.3:a:microsoft:sql_server_2022:*:*:*:*:*:*:x64:*

From (inclusive): 16.0.0

After:

Through (inclusive):

Before: 16.0.1200.5

Vulnerable product

cpe:2.3:a:microsoft:sql_server_2025:*:*:*:*:*:*:x64:*

From (inclusive): 17.0.1050.2

After:

Through (inclusive):

Before: 17.0.1135.8

Vulnerable product

cpe:2.3:a:microsoft:sql_server_2019:*:*:*:*:*:*:x64:*

From (inclusive): 15.0.0.0

After:

Through (inclusive):

Before: 15.0.4490.9

Original applicability statements

[
  {
    "nodes": [
      {
        "operator": "OR",
        "negate": false,
        "cpeMatch": [
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:a:microsoft:sql_server_2025:*:*:*:*:*:*:x64:*",
            "versionStartIncluding": "17.0.0.0",
            "versionEndExcluding": "17.0.4085.5"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:a:microsoft:sql_server_2022:*:*:*:*:*:*:x64:*",
            "versionStartIncluding": "16.0.0.0",
            "versionEndExcluding": "16.0.4275.2"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:a:microsoft:sql_server_2017:*:-:*:*:*:*:x64:*",
            "versionStartIncluding": "14.0.0",
            "versionEndExcluding": "14.0.2130.4"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:a:microsoft:sql_server_2019:*:*:*:*:*:*:x64:*",
            "versionStartIncluding": "15.0.0",
            "versionEndExcluding": "15.0.2190.7"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:a:microsoft:sql_server_2017:*:-:*:*:*:*:x64:*",
            "versionStartIncluding": "14.0.0",
            "versionEndExcluding": "14.0.3550.4"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:a:microsoft:sql_server_2022:*:*:*:*:*:*:x64:*",
            "versionStartIncluding": "16.0.0",
            "versionEndExcluding": "16.0.1200.5"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:a:microsoft:sql_server_2025:*:*:*:*:*:*:x64:*",
            "versionStartIncluding": "17.0.1050.2",
            "versionEndExcluding": "17.0.1135.8"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:a:microsoft:sql_server_2019:*:*:*:*:*:*:x64:*",
            "versionStartIncluding": "15.0.0.0",
            "versionEndExcluding": "15.0.4490.9"
          }
        ]
      }
    ]
  }
]

Contributing organizations · 2

microsoft

Assigning organization

2026-10-30

CISA-ADP

Additional data publisher

2026-09-08

What changed

Follow changes

No substantive changes have been recorded here yet. History starts when cve.new observes a change after tracking is enabled; earlier edits are not reconstructed.

Large field values are marked as truncated previews. Original source snapshots remain retained.

References

1 sources

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-77488

vendor-advisorymicrosoft

Priority and evidence

Not in CISA KEVNo package fix recorded

KEV coverage does not rule out exploitation.

KEV checked 31/10/2026, 11:05:36 UTC

microsoft · CVSS:3.1 · 5.5

Assessment vector

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

Reading the signals

Severity · CVSS: Technical impact and attack conditions. The headline is the highest imported catalog score; sources may disagree.
Observed exploitation · KEV: An absent or unavailable KEV listing does not establish that exploitation has not occurred.
Predicted exploitation · EPSS: 0.40% estimated probability in the next 30 days. 2026-10-30 · FIRST EPSS.

CISA-ADP · SSVC

CISA Coordinator · 2026-09-08

Exploitation: none
Automatable: no
Technical Impact: partial

SSVC describes the publisher’s decision context. Your organization’s exposure and priorities may differ.

Record details

Published: 08/09/2026, 17:18:17 UTC
Modified: 30/10/2026, 21:56:32 UTC
Last imported by cve.new: 30/10/2026, 22:45:53 UTC
Aliases: None recorded

Source evidence

Request a correction or dispute

Start with the assigning organization for this record. Include the CVE ID, the disputed information, and supporting evidence. A dispute does not itself reject a record.

Find the responsible CNA →Official dispute and escalation process ↗

CVE CVE-2026-77488

Enrichment coverage

NVDAvailable

Checked 31/10/2026, 04:15:34 UTC

GHSAAvailable

Checked 31/10/2026, 04:15:34 UTC

EUVDAvailable

Checked 31/10/2026, 04:15:33 UTC

EPSSAvailable

Checked 31/10/2026, 04:15:34 UTC

Additional source evidence

ENISA EUVD · EUVD-2026-73789

CVSS 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C

Checked 31/10/2026, 04:15:33 UTC

NVD · CVE-2026-77488

CVSS 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Checked 31/10/2026, 04:15:34 UTC

FIRST EPSS · CVE-2026-77488

EPSS 0.40% probability of exploitation in the next 30 days. Percentile: 34.66% · 2026-10-30

Checked 31/10/2026, 04:15:34 UTC

GitHub Advisory Database · GHSA-2p2q-6jp7-fc7g

CVSS 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Checked 31/10/2026, 04:15:34 UTC

Sponsored by MoxsoBuild security habits with adaptive training and phishing simulations.View as JSON

Microsoft SQL Server Information Disclosure Vulnerability

Impact

Affected packages

Affected products

Microsoft SQL Server 2017 (CU 31)

affected

unaffected

unknown

Microsoft SQL Server 2017 (GDR)

affected

unaffected

unknown

Microsoft SQL Server 2019 (CU 32)

affected

unaffected

unknown

Microsoft SQL Server 2019 (GDR)

affected

unaffected

unknown

Microsoft SQL Server 2022 (CU 26)

affected

unaffected

unknown

Microsoft SQL Server 2022 (GDR)

affected

unaffected

unknown

Microsoft SQL Server 2025 (CU8)

affected

unaffected

unknown

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

affected

unaffected

unknown

Original source description

Inside the record

Evidence available

Original records

Underlying weaknesses

Environment requirements

What changed

References