Vulnerability record
CVE-2026-70003
The short answer
CVE-2026-70003 affects Microsoft Microsoft JDBC Driver for SQL Server 13.4 and is rated high (CVSS 8.7). It is not in CISA's Known Exploited Vulnerabilities catalog.
What it is
Improper verification of cryptographic signature in JDBC Driver for SQL Server allows an unauthorized attacker to bypass a security feature over a network.
Weakness: CWE-347.
Severity
8.7 high
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
Exploited (CISA KEV)
Not listed
CISA lists confirmed exploitation only
EPSS, next 30 days
No score
FIRST scores CVEs within a day of publication
How it can be exploited
- Attack vector
- Network
- Attack complexity
- High
- Privileges required
- None
- User interaction
- None
- Scope
- Changed
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- None
Affected products
Microsoft JDBC Driver for SQL Server 13.4. NVD's record lists the exact affected versions.
References
Questions
Is CVE-2026-70003 being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog as of 2026-11-11.
How do I fix CVE-2026-70003?
Follow the vendor advisory in the references below. NVD lists the affected versions under its configurations.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Awaiting Analysis. The description is NVD's text, quoted as published.
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