Security readout for executives and security teams
Plain-English summary
This flaw could let someone positioned on the network intercept a Python application’s Snowflake connection because hostname checks on TLS certificates were incomplete. If successful, they could see or alter Snowflake traffic, including credentials, query data, staged files, and actions allowed by the victim’s Snowflake role.
Executive priority
Treat this as urgent for any production system using the Python connector. The issue can expose sensitive Snowflake data and credentials, but exploitation requires network-positioned access. Prioritize upgrade validation and credential review for high-value data pipelines first.
Technical view
CVE-2026-15925 is CWE-297 improper TLS hostname verification in Snowflake Connector for Python before 3.18.1 and 4.7.1. The connector could accept a certificate signed by any trusted CA without matching the requested hostname. Exploitation requires on-path traffic interception capability.
Likely exposure
Exposure is most likely in Python services, jobs, notebooks, or pipelines using Snowflake Connector for Python versions prior to 3.18.1 or 4.7.1. Risk is higher where traffic crosses untrusted networks, proxies, VPN exits, shared Wi-Fi, or complex enterprise routing paths.
Exploitation context
The source bundle reports no KEV listing and provides no evidence of active exploitation. Exploitation is not remote-only in practice; the attacker must be able to intercept or redirect network traffic between the connector and Snowflake.
Researcher notes
The public data identifies TLS hostname validation failure and fixed versions, but does not include exploit artifacts, patch details, or observed exploitation. Analysis should focus on version inventory, session exposure, privilege scope, and Snowflake activity during the vulnerable deployment window.
Mitigation direction
- Manually upgrade Snowflake Connector for Python to 3.18.1 or 4.7.1.
- Rebuild and redeploy affected applications, containers, jobs, and notebooks.
- Review Snowflake release notes and vendor guidance for branch-specific instructions.
- Rotate Snowflake credentials if network interception is plausible.
- Review role privileges to limit impact from compromised connector sessions.
Validation and detection
- Inventory direct and transitive uses of snowflake-connector-python.
- Check lockfiles, container images, notebooks, and runtime environments for affected versions.
- Confirm deployed workloads run connector version 3.18.1 or 4.7.1 or later.
- Review Snowflake query history for unusual activity from affected clients.
- Check network architecture for proxies, exit nodes, or paths enabling interception.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-297: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-15925 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.2 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N——SNOWFLAKEVulnerability scoring details
Base CVSS 4.0 score
9.2CriticalVector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- Snowflake Connector for Python 3.18.1 Release NotesCVE reference, SNOWFLAKE
- Snowflake Connector for Python 4.7.1 Release NotesCVE reference, SNOWFLAKE
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Validation of Certificate with Host Mismatch
Improper Validation of Certificate with Host Mismatch represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.