Intel

CVE-2026-94587

Fabric OS: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') (CVE-2026-94587)

mediumEPSS 0.2%

Description

A buffer overflow vulnerability exists in the WebTools administrative interface handling configuration download or file transfer operations of Brocade Fabric OS versions before 9.2.2d and 10.0.0 through 10.0.0a1. An authenticated user with permissions to perform configuration downloads using remote server profiles can overflow stack buffers causing a crash of the weblinker daemon.

Source: BSI CSAFBSI WID PortalNVD (NIST)cvelistv5

Affected products

The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.

BroadcomFabric OS
< 10.0.1fixed in 10.0.1

Metrics

XIEM Effective CVSS
6.9
Source: cna-v4
EPSS percentile
3.6 %
Low — this CVE sits in the lower 10% of all CVEs scored today.
KEV status
—
Show all metrics
Severity
medium
Priority score
64.60
Exploit maturity
no public PoC known
CVSS v4
6.9
EPSS score
0.2 %
Low — model estimates < 1% exploitation likelihood.
Published
2026-10-08 04:37 UTC
CWE
CWE-120

Weakness classes (CWE)

  • CWE-120Base

    Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

    The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.

    cwe.mitre.org →

References & sources

Reanalysis & status changes

Chronological NVD audit events for this CVE — reanalyses, CVSS updates, CPE diffs.

  1. CVE Modified2026-10-08 18:18 UTC· 134c704f-9b21-4f2e-91b3-4a467353bcc0
    • SSVC: {"id":"CVE-2026-94587","role":"CISA Coordinator","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalI…
  2. New CVE Received2026-10-08 05:17 UTC· sirt@brocade.com
    • Description: A buffer overflow vulnerability exists in the WebTools administrative interface handling configuration download or file transfer operations of Brocade Fabric OS versions before 9.2.2d and 10.0.0 through 10.0.0a1. An authenticated user with permissions to perform configuration downloads using remote server profiles can overflow stack buffers causing a crash of the weblinker daemon.
    • CVSS V4.0: AV:A/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
    • CWE: CWE-120
    • Affected: New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/94xxx/CVE-2026-94587.json">CVE-2026-94587</a>