CVE-2021-20620 json
Cross-site scripting vulnerability in Aterm WF800HP firmware Ver1.0.9 and earlier allows remote attackers to inject an arbitrary script via…
published 2021-01-28 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-8038
- cvss
- 6.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.1%
- EPSS 1.1% chance of exploitation in 30 days, percentile 64%
- public exploits
- 0
- none known
Summary
Cross-site scripting vulnerability in Aterm WF800HP firmware Ver1.0.9 and earlier allows remote attackers to inject an arbitrary script via unspecified vectors.
Patch / fix
- aterm.jp/support/tech/2019/0328.html advisory
Exploit prediction
1.06% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
Affected products
- NEC Corporation Aterm WF800HP
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
aterm.jp
/support/tech/2019/0328.html
patch, vendor-advisory
-
jpn.nec.com
/security-info/secinfo/nv21-005.html
third-party-advisory
-
jvn.jp
/en/jp/JVN38248512/index.html
third-party-advisory
Sources
- CVE List CVE-2021-20620
- NVD CVE-2021-20620
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