CVE-2026-21553: Input Validation
Published Aug 3, 2026
·Updated
In modem, there is a possible improper input validation. This could lead to remote denial of service with no additional execution privileges needed
Event History
Aug 3, 2026
CVE Published
via MITRE·07:18 AM
Data Sourced
via MITRE·07:18 AM
DescriptionSeverityWeakness
Data Sourced
via NVD·08:17 AM
DescriptionSeverityWeakness
Frequently Asked Questions
1
What is the severity of CVE-2026-21553?
CVE-2026-21553 has a severity rating of 7.5, categorized as high risk.
2
What vulnerabilities does CVE-2026-21553 exploit?
CVE-2026-21553 exploits improper input validation within the modem.
3
What are the potential impacts of CVE-2026-21553?
CVE-2026-21553 could lead to a remote denial of service without requiring additional execution privileges.
4
How do I mitigate CVE-2026-21553?
To mitigate CVE-2026-21553, ensure your modem's firmware is updated to the latest version provided by your manufacturer.
5
Is authentication required to exploit CVE-2026-21553?
No, CVE-2026-21553 does not require any authentication to exploit.