Cyber Resilience

CVE-2021-20622

Medium

Published: 28 January 2021

Published
28 January 2021
Modified
21 November 2024
KEV Added
—
Patch
—
CVSS Score v3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS Score 0.0046 64.8th percentile
Risk Priority 12 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-20622 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Aterm Wg2600Hp Firmware. Its CVSS base score is 6.1 (Medium).

Operationally, ranked in the top 35.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Cross-site scripting vulnerability in Aterm WG2600HP firmware Ver1.0.2 and earlier, and Aterm WG2600HP2 firmware Ver1.0.2 and earlier allows remote attackers to inject an arbitrary script via unspecified vectors.

CWE(s)
CWE-79

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

aterm
wg2600hp firmware
≤ 1.0.2
aterm
wg2600hp2 firmware
≤ 1.0.2

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

CA-8 Penetration Testing
addresses: CWE-79

Penetration testing submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.

SI-10 Information Input Validation
addresses: CWE-79

Validates web inputs to reject script-related content that could produce XSS.

SI-15 Information Output Filtering
addresses: CWE-79

Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.

References