CVE-2026-83838

Integer underflow (wrap or wraparound) in Windows Bluetooth A2DP driver allows an authorized…

Risk score: 56/100
CVSS: 8.0 v3.1
Exploit chance (30 days): 0.5%
Published: 13 Oct 2026

Open in the live forecast Today's forecast

What to know

What it is: Integer underflow (wrap or wraparound) in Windows Bluetooth A2DP driver allows an authorized attacker to elevate privileges over an adjacent network.
Affected: See advisory
Fix: Apply the vendor's security update; see the linked advisory.
Exploitation: No known exploitation

Why it is Yellow

CVSS 8.0 high

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83838

Original description

Integer underflow (wrap or wraparound) in Windows Bluetooth A2DP driver allows an authorized attacker to elevate privileges over an adjacent network.

Last activity 13 Oct 2026. Patch Forecast updates every hour.