Security readout for executives and security teams
This is an old authentication-bypass issue in Xyplex terminal server 6.0.1S1, with other versions possibly affected. A remote user could bypass the password prompt using specific single-character input. Business risk depends on whether any legacy Xyplex terminal servers remain reachable. Exposure is most likely in legacy environments still running Xyplex terminal servers. Risk increases if the device is reachable from untrusted networks or fronts serial console access to sensitive infrastructure. Treat this as a legacy exposure question. It is not broadly urgent unless Xyplex terminal servers are still deployed, but any reachable affected unit could undermine access controls. Mitigation focus: Inventory for Xyplex terminal servers, especially version 6.0.1S1.; Remove public or untrusted network access to affected terminal servers.; Restrict administration to trusted networks or authenticated remote-access paths..
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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ATT&CK lookup starting points
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Credential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-1999-1257 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
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CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- xyplex-controlz-login(1825)CVE reference · vdb-entry, x_refsource_XF
- xyplex-question-login(1826)CVE reference · vdb-entry, x_refsource_XF
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.