What’s Vulnerable › Vulnerabilities

CVE-2021-3254

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-05-11 · updated 2026-06-17

Description

Asus DSL-N14U-B1 1.1.2.3_805 allows remote attackers to cause a Denial of Service (DoS) via a TCP SYN scan using nmap.

Affected products

• ASUS Dsl-N14U-B1 Firmware: 1.1.2.3_805

References

• https://github.com/kaisersource/kaisersource.github.io/blob/main/_posts/2021-01-22-dsl-n14u.md
• https://kaisersource.github.io/dsl-n14u-syn
• https://github.com/kaisersource/kaisersource.github.io/blob/main/_posts/2021-01-22-dsl-n14u.md
• https://kaisersource.github.io/dsl-n14u-syn

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