RCE in Bridgehead Software Filestore
CVE-2026-39920
BridgeHead FileStore versions prior to 24A (released in early 2024) expose the Apache Axis2 administration module on network-accessible endpoints with default credentials that allows unauthenticated remote attackers to execute arbitrary OS commands. Attackers can authenticate to the admin console using default credentials, upload a malicious Java archive as a web service, and execute arbitrary commands on the host via SOAP requests to the deployed service.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.011 (63.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 63.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.011 · change: +0.005
Affected products
- Bridgehead Software Filestore — versions 0
Weakness classification (CWE)
References
- gist.github.com/VAMorales/9e6a13d7529c079a363930dff48be3ba (technical-description, exploit)
- www.bridgeheadsoftware.com/rapid-data-protection-product-updates/ (release-notes)
- issues.apache.org/jira/browse/AXIS2-4279 (related)
- axis.apache.org/axis2/java/core/docs/webadminguide.html (related)
- www.vulncheck.com/advisories/bridgehead-filestore-24a-apache-axis2-default-cred… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-39920?
- CVE-2026-39920 is a critical-severity vulnerability in Bridgehead Software Filestore, classified under Initialization of a Resource with an Insecure Default. CVSS score: 9.8/10. Published 2026-04-24.
- How severe is CVE-2026-39920?
- Critical severity. CVSS v3 base score is 9.8 out of 10.