CVE Tools
Sign in

CVE-2021-20680

Published: Apr 26, 2021Updated: Nov 21, 2024 Sources: CVE List NVDCWE-79
6.1MEDIUM
NVD MITRE
EPSS Score
0.8%
Top 47.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

Description

Cross-site scripting vulnerability in NEC Aterm devices (Aterm WG1900HP2 firmware Ver.1.3.1 and earlier, Aterm WG1900HP firmware Ver.2.5.1 and earlier, Aterm WG1800HP4 firmware Ver.1.3.1 and earlier, Aterm WG1800HP3 firmware Ver.1.5.1 and earlier, Aterm WG1200HS2 firmware Ver.2.5.0 and earlier, Aterm WG1200HP3 firmware Ver.1.3.1 and earlier, Aterm WG1200HP2 firmware Ver.2.5.0 and earlier, Aterm W1200EX firmware Ver.1.3.1 and earlier, Aterm W1200EX-MS firmware Ver.1.3.1 and earlier, Aterm WG1200HS firmware all versions Aterm WG1200HP firmware all versions Aterm WF800HP firmware all versions Aterm WF300HP2 firmware all versions Aterm WR8165N firmware all versions Aterm W500P firmware all versions, and Aterm W300P firmware all versions) allows remote attackers to inject arbitrary script or HTML via unspecified vectors.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:RS:CC:LI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-79

Affected Products

NEC Corporation
commercial·JPaka nec, nec expresscluster, nec aterm
aterm wg1900hp2 firmwareEmbeddedFirmware
Hardware Firmware / network-adapter
aterm wg1900hp firmwareEmbeddedFirmware
Hardware Firmware / network-adapter
aterm wg1800hp4 firmwareEmbeddedFirmware
Hardware Firmware / network-adapter
aterm wg1800hp3 firmwareEmbeddedFirmware
Hardware Firmware / network-adapter
aterm wg1200hs3 firmwareEmbeddedFirmware
Hardware Firmware / network-adapter
aterm wg1200hs2 firmwareEmbeddedFirmware
Hardware Firmware / network-adapter
aterm wg1200hp3 firmwareEmbeddedFirmware
Hardware Firmware / network-adapter
aterm wg1200hp2 firmwareEmbeddedFirmware
Hardware Firmware / network-adapter
and 10 more affected products View all →

Exploitability

Official Patch Available

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://jpn.nec.com/security-info/secinfo/nv21-008.html
jpn.nec.com
https://jvn.jp/en/jp/JVN67456944/index.html
jvn.jp

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2021-20680 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows