CVE-2025-34098: Riverbed Technology SteelHead VCX · Information Exposure
Affects Riverbed Technology SteelHead VCXSource CVE Database V5
Public exploit available (Metasploit) · CVSS 7.1 High.
Data as of 26 Oct 2026, 12:55 UTC
- EPSS
- 1.2% chance of exploitation in 30 days – higher than 69% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 10 Jul 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: evidence found.
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Riverbed Technology SteelHead VCX | Affected
| Fixed in– |
AI-suggested
Until an official fix is available, restrict authenticated access to the management web interface to trusted administrators only and monitor for suspicious activity related to log filtering. Avoid exposing the management interface to untrusted networks. Follow vendor communications for updates on patches or mitigations.
Description
A path traversal vulnerability exists in Riverbed SteelHead VCX appliances (confirmed in VCX255U 9.6.0a) due to improper input validation in the log filtering functionality exposed via the management web interface. An authenticated attacker can exploit this flaw by submitting crafted filter expressions to the log_filter endpoint using the filterStr parameter. This input is processed by a backend parser that permits execution of file expansion syntax, allowing the attacker to retrieve arbitrary system files via the log viewing interface.
References
- raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/auxiliary/scanner/http/riverbed_steelhead_vcx_file_read.rb (opens in a new tab)
- exploit-db.com/exploits/42101 (opens in a new tab)
- vulncheck.com/advisories/riverbed-steel-head-vcx-authenticated-arbitrary-file-read (opens in a new tab)