Administrators should verify the version of Rejetto HFS in use, apply any available patches or updates from the official Rejetto project, and restrict network exposure using firewall rules or segmentation. Monitoring for unauthorized access attempts and reviewing server logs is recommended until a verified fix is released.
Quick answers
What is CVE-2026-61500?
Administrators should verify the version of Rejetto HFS in use, apply any available patches or updates from the official Rejetto project, and restrict network exposure using firewall rules or segmentation. Monitoring for unauthorized access attempts and reviewing server logs is recommended until a verified fix is released.
How severe is CVE-2026-61500?
high
Is CVE-2026-61500 known to be exploited?
It is not marked known-exploited in this record.
How should CVE-2026-61500 be mitigated?
Administrators should verify the version of Rejetto HFS in use, apply any available patches or updates from the official Rejetto project, and restrict network exposure using firewall rules or segmentation. Monitoring for unauthorized access attempts and reviewing server logs is recommended until a verified fix is released.
CVSS
—
Vendor
Rejetto
Published
Oct 6, 2026 · 01:56
Patch
Unknown / not confirmed
Affected products
Rejetto HFS
Mitigation
Administrators should verify the version of Rejetto HFS in use, apply any available patches or updates from the official Rejetto project, and restrict network exposure using firewall rules or segmentation. Monitoring for unauthorized access attempts and reviewing server logs is recommended until a verified fix is released.
Security researchers and threat actors are actively scanning the internet for Rejetto HTTP File Server (HFS) instances exposed to the internet. The activity targets a critical vulnerability, tracked as CVE-2026-61500, which stems from a weak signing key. Successful exploitation could allow session forgery, account takeover, and remote code execution. No official patch has been confirmed in the reporting, and the CVE assignment is noted to fall outside typical assignment windows, requiring independent verification.
