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CVE-2020-9117

23
FAUCET Score

CVE-2020-9117 is an out-of-bounds read and write vulnerability affecting specific versions of HUAWEI nova 4 and SydneyM-AL00 devices. An attacker with specific permissions can craft and send a malformed packet, leading to information leakage or arbitrary code execution due to insufficient packet validation. This vulnerability is rated as High severity (CVSS 7.8), indicating a local attack vector with low complexity and high impact on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 10.0.0.165\(c01e34r2p4\)CPE matchmatch criteria
cpe:2.3:o:huawei:nova_4_firmware:*:*:*:*:*:*:*:*
< 10.0.0.165\(c00e66r1p5\)CPE matchmatch criteria
cpe:2.3:o:huawei:sydneym-al00_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.25%
Probability of exploitation in next 30 days
EPSS Percentile
16.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0025 is in the 50th percentile among its peer group of 17,061 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 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-20201125-01-outofboundread-en
Vendor Advisory