Security readout for executives and security teams
Plain-English summary
CVE-1999-0827 describes a default Internet Explorer behavior that allowed content in one domain to navigate sub-frames in another domain, enabling frame spoofing. In business terms, a user could be misled about what site or frame they are interacting with. The supplied sources do not provide a CVSS score, affected-version list, patch, or exploitation evidence.
Executive priority
Treat this as legacy technology risk, not an emergency from the supplied evidence. Prioritize it where Internet Explorer remains in production, especially for user-facing workflows involving authentication, sensitive portals, or embedded third-party frames.
Technical view
The CVE states that Internet Explorer 5.0 and other versions enabled the “Navigate sub-frames across different domains” option by default. That cross-domain frame navigation behavior could allow frame spoofing. The source bundle does not identify CWE, CPEs, precise affected versions, vendor remediation, or a proof of active exploitation.
Likely exposure
Exposure is most likely limited to environments still using legacy Internet Explorer versions or legacy browser compatibility configurations. The supplied affected-product data is marked n/a, so exact exposure cannot be determined from these sources alone.
Exploitation context
No active exploitation is stated in the supplied sources, and the CVE is not listed as KEV in the bundle. The described impact is spoofing through browser frame behavior, which could support user deception, but the sources do not provide exploit details or observed attacks.
Researcher notes
The record is sparse: no CVSS, CWE, CPE, patch, or named mitigation is included. Analysis should remain anchored to the stated Internet Explorer default option and frame-spoofing impact. Do not infer modern browser exposure without separate vendor evidence.
Mitigation direction
- Check Microsoft or browser vendor guidance for supported remediation.
- Inventory remaining Internet Explorer usage and legacy browser dependencies.
- Review whether cross-domain sub-frame navigation is enabled in managed configurations.
- Prefer supported browsers for business applications where feasible.
- Retire or isolate systems requiring legacy Internet Explorer behavior.
Validation and detection
- Identify endpoints or applications still using Internet Explorer.
- Check managed browser settings for cross-domain sub-frame navigation behavior.
- Confirm whether business workflows depend on frames across different domains.
- Review compensating controls for legacy browser access paths.
- Document any systems where remediation guidance is 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-1999-0827 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-1999-0827CVE 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.