CVE-2023-40090 Information disclosure in Android

What is CVE-2023-40090?

CVE-2023-40090 is a medium-severity vulnerability in Google Android, published on 4 Dec 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

In BTM_BleVerifySignature of btm_ble.cc, there is a possible way to bypass signature validation due to side channel information disclosure. This could lead to remote escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

Weakness: CWE-203

Which versions are affected by CVE-2023-40090?

It affects 1 product.

Products include Google Android.

How do I fix CVE-2023-40090?

Apply the vendor's patch.

Is CVE-2023-40090 being exploited?

There is no known exploitation of CVE-2023-40090 in the wild and no public exploit code.

Other vulnerabilities in Google Android

• CVE-2026-58704 Google Pixel Improper Authorization Exploited High 8.8
• CVE-2025-48543 Android Runtime Use-After-Free Exploited High 8.8
• CVE-2023-35674 Android Framework Privilege Escalation Exploited High 8.8
• CVE-2025-48595 Android Framework Integer Overflow Exploited High 8.4
• CVE-2024-32896 Android Pixel Privilege Escalation Exploited High 8.1

All Google Android vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as A-274478807, ASB-A-274478807, GHSA-x74m-v58j-5gpr.