Security readout for executives and security teams
UltraBoard, an older web forum application, can be knocked offline by a remote visitor who sends a specially crafted Session value that tricks the program into repeatedly launching copies of itself. The server exhausts its resources and stops responding. This is a denial-of-service issue affecting UltraBoard 1.6 and possibly other versions from that era, publicly reported in 2000. Very limited today. UltraBoard is a legacy Perl CGI forum from the late 1990s and is rarely deployed on modern infrastructure. Exposure is meaningful only for organizations still running an unmaintained UltraBoard instance reachable from untrusted networks. Not listed in CISA KEV. Low priority for most organizations. Act only if legacy UltraBoard forums are still in production; in that case, plan decommissioning or replacement rather than treating this as an urgent patch cycle item. No indication of active exploitation or business-critical impact beyond forum availability. Mitigation focus: Inventory web properties for any UltraBoard CGI installations and confirm whether the software is still in use.; Retire or replace UltraBoard with a maintained forum platform, since the product is legacy and unpatched.; If retention is required, restrict access to trusted networks and place behind a reverse proxy with rate limiting..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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CVE-2000-0426 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
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- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
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CVSS and timeline data
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Source materials
- CVE List V5 sourceCVE List V5
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