Security readout for executives and security teams
Plain-English summary
CVE-2020-23539 describes a remote denial-of-service issue in Realtek rtl8723de BLE Stack versions up to 4.1. An attacker within Bluetooth range could potentially disrupt affected BLE functionality. The public bundle does not provide CVSS scoring, CPEs, confirmed products, or a vendor fix.
Executive priority
Treat this as an exposure-discovery item, not an emergency response item, unless affected BLE-dependent systems support critical operations. Business urgency depends on whether your environment contains devices using this specific Realtek BLE stack.
Technical view
The issue is tied to handling of the interval field in a BLE CONNECT_REQ message in Realtek rtl8723de BLE Stack <= 4.1. The stated impact is denial of service. The record lacks CWE, CVSS, reliable product mappings, and confirmed remediation details.
Likely exposure
Exposure is likely limited to devices or firmware that embed Realtek rtl8723de BLE Stack <= 4.1. The supplied CVE data does not identify specific commercial products, CPEs, operating systems, or device models.
Exploitation context
The CVE is not listed as KEV in the supplied data. The bundle includes a public GitHub reference, but no cited source confirms active exploitation in the wild or provides reliable exploit prevalence.
Researcher notes
Evidence is thin: the CVE description names the vulnerable message field and DoS impact, but public metadata lacks CVSS, CWE, CPEs, affected product mappings, and vendor remediation. Validate applicability through firmware evidence rather than product-name assumptions.
Mitigation direction
- Check Realtek and device-OEM guidance for affected firmware and fixed BLE stack versions.
- Inventory devices and firmware that may include rtl8723de BLE Stack <= 4.1.
- Limit BLE availability on suspected devices when operationally feasible.
- Do not assume patch availability without vendor or OEM confirmation.
Validation and detection
- Review firmware BOMs and vendor documentation for rtl8723de BLE Stack version details.
- Confirm whether BLE is enabled and reachable on potentially affected devices.
- Map affected assets to business functions and outage tolerance.
- Monitor vendor advisories for remediation or replacement guidance.
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-2020-23539 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://github.com/pokerfacett/MY_REQUEST/blob/df73fe140655ea44542b03ac186e6c2b47e97540/Realtek%208723ds%20BLE%20SDK%20denial%20of%20service%20attack.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.