CVE-2024-45431

Blue Sdk vulnerability

CVSS

5.3

EPSS

4.4%

EPSS pct

90th

Exploited

No known

OpenSynergy BlueSDK (aka Blue SDK) through 6.x has Improper Input Validation. The specific flaw exists within the BlueSDK Bluetooth stack. The issue results from the lack of proper validation of remote L2CAP channel ID (CID). An attacker can leverage this to create an L2CAP channel with the null identifier assigned as a remote CID.

Affected vendor

Opensynergy

Affected product

Blue Sdk

CVSS vector

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

Weakness type (CWE)

CWE-20 — Improper Input Validation

Published

2025-09-12

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to low impact to confidentiality.

Its EPSS score of 4.4% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 90% of all scored CVEs.

Check your external exposure to CVE-2024-45431

Confirm whether Opensynergy Blue Sdk is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2024-45431.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2024-45431

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2024-45431 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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