CVE-2026-21407

Description

Deadlock for some Intel(R) Arc(TM) B-series graphics cards within Ring 1: Device Drivers may allow a denial of service. Unprivileged software adversary with an authenticated user combined with a low complexity attack may enable denial of service. This result may potentially occur via local access when attack requirements are not present with special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (none) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.

Is your site exposed to CVE-2026-21407?

Run a free security scan — no signup, results in seconds.

EPSS — Exploit Prediction

0.0008

Probability of exploitation

0.00%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-833 CWE-833

References

Other References

https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01440.html

Frequently Asked Questions

What is CVE-2026-21407? +

Deadlock for some Intel(R) Arc(TM) B-series graphics cards within Ring 1: Device Drivers may allow a denial of service. Unprivileged software adversary with an authenticated user combined with a low complexity attack may enable denial of service. This result may potentially occur via local access when attack requirements are not present with special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (none) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.

How do I check if I'm vulnerable to CVE-2026-21407? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2025-10150

Webserver crash caused by scanning on TCP port 80 in Softing Industrial Automation GmbH gateways and switch.This issue affects smartLink …

CVE-2026-105390

Improper synchronization in the OpenVPN ovpn-dco-win for Windows versions 0.6.5 through 1.3.5 and 2.4.0 through 2.8.7 allows local attackers to …

CVE-2026-70186 7.5

Deadlock in ASP.NET Core allows an unauthorized attacker to deny service over a network.

CVE-2026-46352 7.5

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Starting in version 8.0.0 and …

CVE-2025-1713 7.5

When setting up interrupt remapping for legacy PCI(-X) devices, including PCI(-X) bridges, a lookup of the upstream bridge is required. …

CVE-2026-103558 7.5

Deadlock in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to deny service over a network.