Description
Improper OCSP response validation in the Snowflake Python, Go, JDBC, and Node.js drivers allowed a revoked TLS certificate to be accepted as valid, because OCSP responses were not reliably bound to the certificate being validated and definitive verification failures were treated as transient. A man-in-the-middle attacker holding a revoked certificate and its private key for a Snowflake or stage hostname could cause the driver to establish a TLS session to the attacker-controlled endpoint anyway, allowing the attacker to read and modify data transmitted within that connection. Successful exploitation requires that on-path position and the corresponding private key, and impact is limited to data carried within the intercepted connection. The fix is available in the patched versions listed above. Users must manually upgrade.
Published: 2026-09-04
Score: 7.4 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Fri, 04 Sep 2026 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Important


Fri, 04 Sep 2026 08:30:00 +0000

Type Values Removed Values Added
Description Improper OCSP response validation in the Snowflake Python, Go, JDBC, and Node.js drivers allowed a revoked TLS certificate to be accepted as valid, because OCSP responses were not reliably bound to the certificate being validated and definitive verification failures were treated as transient. A man-in-the-middle attacker holding a revoked certificate and its private key for a Snowflake or stage hostname could cause the driver to establish a TLS session to the attacker-controlled endpoint anyway, allowing the attacker to read and modify data transmitted within that connection. Successful exploitation requires that on-path position and the corresponding private key, and impact is limited to data carried within the intercepted connection. The fix is available in the patched versions listed above. Users must manually upgrade.
Title Improper OCSP response validation in Snowflake drivers
Weaknesses CWE-295
CWE-347
References
Metrics cvssV3_1

{'score': 7.4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N'}


Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: SNOWFLAKE

Published:

Updated: 2026-09-04T19:40:26.454Z

Reserved: 2026-09-04T08:19:50.886Z

Link: CVE-2026-85525

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-04T09:17:11.610

Modified: 2026-09-04T20:17:32.000

Link: CVE-2026-85525

cve-icon Redhat

Severity : Important

Publid Date: 2026-09-04T08:22:43Z

Links: CVE-2026-85525 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-09-04T10:00:05Z

Weaknesses
  • CWE-295

    Improper Certificate Validation

  • CWE-347

    Improper Verification of Cryptographic Signature