What’s Vulnerable › Vulnerabilities

CVE-2021-20132

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-12-30 · updated 2026-06-17
• Weakness: CWE-798

Description

Quagga Services on D-Link DIR-2640 less than or equal to version 1.11B02 use default hard-coded credentials, which can allow a remote attacker to gain administrative access to the zebra or ripd those services. Both are running with root privileges on the router (i.e., as the "admin" user, UID 0).

Affected products

• Quagga Services on D-Link DIR-2640 Routers: through 1.11b02

References

• https://www.tenable.com/security/research/tra-2021-44
• https://www.tenable.com/security/research/tra-2021-44

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