Security readout for executives and security teams
Plain-English summary
CVE-2019-19820 is a local kernel-driver flaw in Kyrol Internet Security 9.0.6.9. If the vulnerable kyrld.sys driver is installed, a user-mode attacker may escalate privileges, crash the system, or execute code. The public record does not provide CVSS, vendor patch details, or broad affected-version metadata.
Executive priority
Treat this as high priority only where Kyrol Internet Security 9.0.6.9 is present. The business risk is concentrated but serious because vulnerable security software runs with kernel privileges and could help a local attacker gain control of a Windows endpoint.
Technical view
The CVE describes invalid pointer handling in kyrld.sys IOCTL processing. A specific METHOD_NEITHER request path is reported to create a read primitive from user mode, enabling privilege escalation, denial of service, and code execution. Available affected-product metadata is sparse, but the description names Kyrol Internet Security 9.0.6.9.
Likely exposure
Exposure appears limited to Windows endpoints running Kyrol Internet Security 9.0.6.9 with the vulnerable kyrld.sys driver present. The CVE bundle does not identify other versions, deployment prevalence, or vendor-maintained affected CPEs.
Exploitation context
The bundle does not show CISA KEV listing or confirmed active exploitation. Public researcher references exist, but the provided data does not establish exploitation in the wild. The attack context appears local user-mode interaction with the installed driver, not remote unauthenticated access.
Researcher notes
Evidence is limited to the CVE description and researcher references. No CVSS vector, CWE, patch statement, or complete affected-version range is provided in the bundle. Avoid assuming active exploitation, remote reachability, or affected versions beyond Kyrol Internet Security 9.0.6.9.
Mitigation direction
- Identify endpoints with Kyrol Internet Security 9.0.6.9 installed.
- Check vendor or maintainer guidance for patched versions or replacement options.
- Remove or disable unsupported vulnerable software where business-safe.
- Restrict local access on systems where the driver remains installed.
- Prioritize endpoint monitoring for suspicious privilege escalation or crashes.
Validation and detection
- Inventory systems for Kyrol Internet Security 9.0.6.9.
- Confirm whether kyrld.sys is installed and loaded.
- Review software asset data for unsupported Kyrol deployments.
- Check vulnerability scanners for CVE-2019-19820 detection coverage.
- Verify remediation against vendor guidance when available.
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.
Execution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2019-19820 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://nafiez.github.io/security/vulnerability/2019/12/04/kyrol-internet-security-invalid-pointer-vulnerability.htmlCVE reference · x_refsource_MISC
- https://github.com/nafiez/nafiez.github.io/blob/master/_posts/2019-12-04-kyrol-internet-security-invalid-pointer-vulnerability.mdCVE 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.