Brocade ASCG: Path Traversal in HTTP service allows file read, write and delete
Summary
The HTTP service of Brocade ASCG versions before 3.5.0 contains a path traversal vulnerability (CWE-22). An unauthenticated attacker on the local network can send a manipulated API request to bypass path restrictions and read, write or delete arbitrary files. No user interaction is required; the CVSS 4.0 base score is 8.6 (high).
Affected
- Brocade ASCG versions before 3.5.0
Fixed in
- Upgrade to Brocade ASCG 3.5.0 or later (security update per the CNA record)
Workaround
Unknown. No vendor-published workaround was found.
Exploitation
- CISA SSVC: exploitation none, automatable no, technical impact total
- No evidence of exploitation in the wild found
- No public proof of concept found
Our recommendation
- Identify all ASCG instances and their versions.
- Plan the upgrade to 3.5.0 or later as a priority.
- Until patched, restrict access to the ASCG HTTP interface to a management VLAN or specific admin hosts.
- Check file system integrity and backups of the appliance.
- Assess CVE-2026-85488 and CVE-2026-85490 from the same advisory batch together with this issue.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Broadcom Security Advisory 38383 support.broadcom.com
- VulDB: CVE-2026-85487 vuldb.com
- PSIRT: CVE-2026-85487 psirt.com
- ACN: Brocade product vulnerabilities resolved www.acn.gov.it
- Rapid7 via Vulners: CVE-2026-85487 vulners.com
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 1 Nov 2026, 09:10.
Original description (NVD)
A path traversal vulnerability exists in the HTTP service component of Brocade ASCG versions before 3.5.0. An unauthenticated attacker on the local network could send a manipulated API request to the service endpoint bypassing path restrictions to arbitrary file read, file write, or file deletion operations.
NVD references (1)
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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