CVE-2021-20132 json
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 attac…
published 2021-12-30 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-7589
- cvss
- 8.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 4.4%
- EPSS 4.4% chance of exploitation in 30 days, percentile 91%
- public exploits
- 0
- none known
Summary
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).
Exploit prediction
4.43% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- tenable.com https://www.tenable.com/security/research/tra-2021-44 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 8.3 | AV:A/AC:L/Au:N/C:C/I:C/A:C |
Affected products
- n/a Quagga Services on D-Link DIR-2640 Routers
Classification
- Weakness
-
- CWE-798 Use of Hard-coded Credentials
References
-
tenable.com
/security/research/tra-2021-44
exploit, third-party-advisory
Sources
- CVE List CVE-2021-20132
- NVD CVE-2021-20132
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