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CVE-2020-23539

24
FAUCET Score

CVE-2020-23539 is a Denial of Service vulnerability affecting Realtek rtl8723de BLE Stack versions 4.1 and earlier, as well as associated firmware. This high-severity flaw (CVSS 7.5) allows unauthenticated remote attackers to trigger a denial of service by manipulating the interval field within a CONNECT_REQ message. While the vulnerability is publicly known, there is currently no evidence of active exploitation, no readily available exploit code (Metasploit, Nuclei, ExploitDB), and minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.1CPE matchmatch criteria
cpe:2.3:o:realtek:rtl8723de_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.79%
Probability of exploitation in next 30 days
EPSS Percentile
76.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0179 is in the 59th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / pokerfacett/MY_REQUEST/blob/df73fe140655ea44542b03ac186e6c2b47e97540/Realtek%208723ds%20BLE%20SDK%20denial%20of%20service%20attack.md
ExploitThird Party Advisory