Security readout for executives and security teams
Plain-English summary
CVE-1999-0795 describes an old NIS+ server issue where remote users may make certain rpc.nisd requests without authentication. The reported outcomes include system information exposure, disabling logging, or modifying caches. The source bundle does not identify affected vendors, versions, CVSS score, patch status, or active exploitation.
Executive priority
Treat this as a legacy-infrastructure exposure review rather than an emergency without more evidence. Prioritize internet or broadly reachable NIS+ systems because the reported impact includes unauthenticated remote changes to logging and caches.
Technical view
The flaw is in the NIS+ rpc.nisd server authorization path. Some RPC calls can allegedly be executed remotely without authentication, allowing information retrieval, logging changes, or cache modification. The available record lacks affected CPEs, fixed versions, CWE mapping, and technical validation detail.
Likely exposure
Exposure is most plausible on legacy Unix environments still running NIS+ rpc.nisd, especially if reachable from untrusted networks. The provided sources do not name affected products or versions, so exposure must be confirmed through asset inventory and vendor-specific records.
Exploitation context
The provided bundle does not show CISA KEV listing or any cited evidence of active exploitation. The issue is remotely reachable in concept, but the available sources do not provide exploit maturity, prerequisites, or observed abuse details.
Researcher notes
Evidence is sparse and historic. The CVE record states the behavior and impacts but does not include affected version ranges, scoring, patches, or reproduction detail. Avoid assuming modern exposure unless NIS+ rpc.nisd is present and reachable.
Mitigation direction
- Identify systems running NIS+ rpc.nisd and confirm business need.
- Check vendor guidance for affected versions and any available fixes.
- Restrict NIS+/RPC reachability to trusted networks only.
- Retire or migrate legacy NIS+ services where feasible.
- Review logging configuration and cache integrity on exposed systems.
Validation and detection
- Inventory hosts for active NIS+ rpc.nisd service exposure.
- Map detected systems to vendor and OS version records.
- Confirm whether rpc.nisd is reachable from untrusted network segments.
- Review security logs for unexpected logging changes or cache anomalies.
- Document compensating controls where vendor fixes are unavailable.
Public sources used
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
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-1999-0795 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
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
- https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0795CVE reference · x_refsource_MISC
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.