CVE-2024-45431: OpenSynergy BlueSDK (aka Blue SDK) through 6.x has Improper Input Validation

Q: How do I fix CVE-2024-45431?

blue sdk: upgrade to newer than 6.0.1. Exact commands for each OS are on this page.

Q: Is CVE-2024-45431 being exploited?

CVE-2024-45431 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2024-45431 affect?

CVE-2024-45431 affects blue sdk. Severity is medium (CVSS 5.3). 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 ca

Q: How urgent is CVE-2024-45431?

Priority 52/100. EPSS top 7%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

This week

MEDIUM 5.3REMOTEUPGRADE

CVE-2024-45431 is a medium-severity flaw (CVSS 5.3) affecting blue sdk. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

EPSS top 7%: very likely to be exploited
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	5.6% (top 7%)
CISA exploited list	No
Weakness	CWE-20
Published	2025-09-12
Last modified	2026-10-27

Publisher (CNA): MITRE · Vendor: opensynergy

Last updated 2026-10-27 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-09-12 17:15 UTCPublished CVE record published
2026-10-27 18:10 UTCUpdated Record last modified

opensynergy blue sdk UPGRADE

Affected: <= 6.0.1

Fixed in: newer than 6.0.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy blue-sdk || rpm -q blue-sdk || blue-sdk --version

2. UPGRADE to newer than 6.0.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade blue-sdk

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade blue-sdk

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-45431?

blue sdk: upgrade to newer than 6.0.1. Exact commands for each OS are on this page.

Is CVE-2024-45431 being exploited?

CVE-2024-45431 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-45431 affect?

CVE-2024-45431 affects blue sdk. Severity is medium (CVSS 5.3). 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 ca

How urgent is CVE-2024-45431?

Priority 52/100. EPSS top 7%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

Bluetooth vulnerabilities

References

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