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CVE-2020-9122

22
FAUCET Score

CVE-2020-9122 describes an insufficient input verification vulnerability in several Huawei router models, including HiRouter-CD30-10, WS5200-12, and WS7200-10. With a CVSS score of 6.5 (Medium), this vulnerability can be exploited by an unauthenticated attacker on the local area network (LAN) to cause a denial of service (service abnormal) on affected devices. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage regarding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 10.0.2.5, < 10.0.5.7CPE matchmatch criteria
cpe:2.3:o:huawei:hirouter-cd30-10_firmware:*:*:*:*:*:*:*:*
>= 10.0.2.20, < 10.0.2.37CPE matchmatch criteria
cpe:2.3:o:huawei:hirouter-ct31-10_firmware:*:*:*:*:*:*:*:*
>= 10.0.1.9, <= 10.0.5.6CPE matchmatch criteria
cpe:2.3:o:huawei:ws5200-12_firmware:*:*:*:*:*:*:*:*
>= 10.0.5.10, < 10.0.5.32CPE matchmatch criteria
cpe:2.3:o:huawei:ws5281-10_firmware:*:*:*:*:*:*:*:*
>= 10.0.3.25, < 10.0.3.33CPE matchmatch criteria
cpe:2.3:o:huawei:ws5800-10_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.36%
Probability of exploitation in next 30 days
EPSS Percentile
28.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0036 is in the 41st percentile among its peer group of 1,802 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

huawei.com / en/psirt/security-advisories/huawei-sa-20200930-01-verification-en
Vendor Advisory