CVE-2026-67378
CVE-2026-67378 is a critical-severity vulnerability in Microsoft Sql Server 2019 with a CVSS 3.x base score of 9.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-822.
Key facts
- Severity: Critical (CVSS 3.x base score 9.0)
- EPSS exploit prediction: 1% (52nd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-822
- Affected product: Microsoft Sql Server 2019
- Published:
- Last modified:
Description
Untrusted pointer dereference in SQL Server allows an unauthorized attacker to execute code over a network.
Frequently asked questions
- What is CVE-2026-67378?
- Untrusted pointer dereference in SQL Server allows an unauthorized attacker to execute code over a network.
- How severe is CVE-2026-67378?
- CVE-2026-67378 has a CVSS 3.x base score of 9.0, rated critical severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2026-67378 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-67378?
- CVE-2026-67378 primarily affects Microsoft Sql Server 2019. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2026-67378?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2026-67378 published?
- CVE-2026-67378 was published on 2026-09-08 and last updated on 2026-09-17.
References
Affected products (3)
- cpe:2.3:a:microsoft:sql_server_2019:*:*:*:*:*:*:x64:*
- cpe:2.3:a:microsoft:sql_server_2022:*:*:*:*:*:*:x64:*
- cpe:2.3:a:microsoft:sql_server_2025:*:*:*:*:*:*:x64:*
More vulnerabilities in Microsoft Sql Server 2019
- CVE-2026-67631 — Critical (CVSS 9.8): Heap-based buffer overflow in SQL Server allows an unauthorized attacker to execute code over a network.
- CVE-2026-54118 — Critical (CVSS 9.8): Deserialization of untrusted data in SQL Server allows an unauthorized attacker to execute code over a network.
- CVE-2026-54117 — Critical (CVSS 9.8): Deserialization of untrusted data in SQL Server allows an unauthorized attacker to execute code over a network.
- CVE-2026-67636 — Critical (CVSS 9.0): Out-of-bounds read in SQL Server allows an unauthorized attacker to execute code over a network.
- CVE-2026-78442 — High (CVSS 8.8): Heap-based buffer overflow in Windows OLE DB allows an unauthorized attacker to execute code over a network.
- CVE-2026-77487 — High (CVSS 8.8): Improper access control in SQL Server allows an authorized attacker to elevate privileges over a network.
All CVEs affecting Microsoft Sql Server 2019 →
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