How severe is CVE-2025-55227?

CVE-2025-55227 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-55227 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-55227?

CVE-2025-55227 primarily affects Microsoft Sql Server 2016. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-55227?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-55227 have an EU (EUVD) identifier?

Yes. CVE-2025-55227 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-27295.

When was CVE-2025-55227 published?

CVE-2025-55227 was published on 2025-09-09 and last updated on 2026-06-17.

CVE-2025-55227

CVE-2025-55227 is a high-severity vulnerability in Microsoft Sql Server 2016 with a CVSS 3.x base score of 8.8. 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-77.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (71st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-27295
Weakness: CWE-77
Affected product: Microsoft Sql Server 2016
Published: 2025-09-09
Last modified: 2026-06-17

Description

Improper neutralization of special elements used in a command ('command injection') in SQL Server allows an authorized attacker to elevate privileges over a network.

Frequently asked questions

What is CVE-2025-55227?: Improper neutralization of special elements used in a command ('command injection') in SQL Server allows an authorized attacker to elevate privileges over a network.
How severe is CVE-2025-55227?: CVE-2025-55227 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-55227 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-55227?: CVE-2025-55227 primarily affects Microsoft Sql Server 2016. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-55227?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-55227 have an EU (EUVD) identifier?: Yes. CVE-2025-55227 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-27295.
When was CVE-2025-55227 published?: CVE-2025-55227 was published on 2025-09-09 and last updated on 2026-06-17.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-55227

Affected products (4)

cpe:2.3:a:microsoft:sql_server_2016:*:*:*:*:*:*:x64:*
cpe:2.3:a:microsoft:sql_server_2017:*:*:*:*:*:*:x64:*
cpe:2.3:a:microsoft:sql_server_2019:*:*:*:*:*:*:x64:*
cpe:2.3:a:microsoft:sql_server_2022:*:*:*:*:*:*:x64:*

More vulnerabilities in Microsoft Sql Server 2016

CVE-2026-54118 — Critical (CVSS 9.8): Deserialization of untrusted data in SQL Server allows an unauthorized attacker to execute code over a network.
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