CVE-2018-21131 json
Certain NETGEAR devices are affected by unauthenticated firmware downgrade.
published 2020-04-23 6 y ago modified 2026-06-17 4 mo ago also EUVD-2018-13649
- cvss
- 8.1
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.3%
- EPSS 1.3% chance of exploitation in 30 days, percentile 70%
- public exploits
- 0
- none known
Summary
Certain NETGEAR devices are affected by unauthenticated firmware downgrade. This affects WAC505 before 5.0.0.17 and WAC510 before 5.0.0.17.
Patch / fix
- netgear wac505_firmware 5.0.0.17
- netgear wac510_firmware 5.0.0.17
Exploit prediction
1.31% chance of exploitation in the next 30 days, higher than 70% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 8.1 | CVSS:3.0/AC:L/AV:A/A:H/C:N/I:H/PR:N/S:U/UI:N |
| NVD | 3.1 | 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H |
| CNA | 3.0 | 8.1 | CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H |
| NVD | 2.0 | 6.4 | AV:N/AC:L/Au:N/C:N/I:P/A:P |
References
Sources
- CVE List CVE-2018-21131
- NVD CVE-2018-21131
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.