# CVE-2026-70003

Signature verification bypass in Microsoft JDBC Driver for SQL Server.

- Page: https://www.vulneraibility.com/cve/CVE-2026-70003
- CVSS: 8.7
- Known exploited: not in CISA KEV as of our last sync
- EPSS: 0.30% (percentile 23.2)
- CISA SSVC: exploitation none, automatable no, technical impact total (assessed 2026-11-11)
- Weakness: CWE-347
- Published: 2026-11-10

## Affected versions

- Microsoft Microsoft JDBC Driver for SQL Server 13.4: affected >= 1.0.0 and < 13.6.0

A version outside these ranges is not a statement that it is unaffected.

## Impact

Remote attacker can bypass signature verification to load tampered/malicious driver, potentially enabling remote code execution or unauthorized access in client apps.

## Action

Immediate action required

## Recommendation

Apply vendor update ASAP; restrict DB client access and validate driver binaries.

## References

- [patch] https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70003

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.