PatchSiren cyber security CVE debrief
CVE-2026-19380 Mullvad CVE debrief
AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-08-10T01:16:48.163Z and has not been modified since then. The vulnerability in Mullvad wireguard.sys 0.10.1, specifically in the AdapterState function of the IOCTL Handler, leads to improper update of reference count. Local access is required for potential exploitation. The vulnerability has a low CVSS score, indicating a low-priority defensive review is recommended. However, administrators and security teams should review and verify system configurations to ensure they are not exposed. Mullvad wireguard.sys 0.10.1 may have configurations that increase risk. Defenders should verify system configurations, review vendor remediation plans, and monitor for potential exploitation attempts. Additional verification is recommended due to limited source information. The affected product or component is Mullvad wireguard.sys 0.10.1, and the vulnerability class is improper update of reference count. The likely operational impact is low, given the local access requirement. Source-confidence limits are moderate due to limited source information. The review context suggests a low-priority defensive review.
- Vendor
- Mullvad
- Product
- wireguard.sys
- CVSS
- LOW 1.8
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-08-10
- Original CVE updated
- 2026-08-10
- Advisory published
- 2026-08-10
- Advisory updated
- 2026-08-10
Who should care
Administrators and security teams responsible for systems using Mullvad wireguard.sys 0.10.1 should review and verify system configurations. They should also monitor for potential exploitation attempts and review vendor remediation plans. Additionally, they should assess their current vulnerability management processes to ensure they can identify and address potential exposures. Security teams should prioritize this vulnerability based on its CVSS score and the potential impact on their systems.
Technical summary
A vulnerability in Mullvad wireguard.sys 0.10.1, specifically in the AdapterState function of the IOCTL Handler, leads to improper update of reference count. Local access is required for potential exploitation. The vulnerability has a low CVSS score, indicating a low-priority defensive review is recommended. However, administrators and security teams should review and verify system configurations to ensure they are not exposed.
Defensive priority
Low-priority defensive review recommended due to local access requirement and low CVSS score.
Recommended defensive actions
- Verify system configurations and inventory for affected components
- Implement compensating controls to restrict local access
- Monitor for potential exploitation attempts
- Review vendor remediation plans and apply patches when available
- Conduct vulnerability assessments to identify potential exposures
- Develop incident response plans for potential exploitation
- Track changes to vendor guidance and update defensive measures accordingly
Evidence notes
Evidence is limited; verify vulnerability details through official channels. Local access is required for potential exploitation. The affected product, Mullvad wireguard.sys 0.10.1, may have configurations that increase risk. Defenders should verify system configurations, review vendor remediation plans, and monitor for potential exploitation attempts. Additional verification is recommended due to limited source information.
Official resources
AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-08-10T01:16:48.163Z and has not been modified since then.