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CVE-2020-9142

28
FAUCET Score

CVE-2020-9142 is a critical heap-based buffer overflow vulnerability affecting Huawei EMUI and Magic UI smartphones. An unauthenticated attacker can exploit this flaw remotely with low complexity by sending a crafted update file, leading to memory overwriting and potential denial of service or arbitrary code execution. Despite its critical CVSS score of 9.1, there is currently no public exploit code available, and it is not listed in CISA's KEV catalog. The vulnerability has also received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
9.1.0CPE matchmatch criteria
cpe:2.3:o:huawei:emui:9.1.0:*:*:*:*:*:*:*
9.1.1CPE matchmatch criteria
cpe:2.3:o:huawei:emui:9.1.1:*:*:*:*:*:*:*
10.0.0CPE matchmatch criteria
cpe:2.3:o:huawei:emui:10.0.0:*:*:*:*:*:*:*
10.1.0CPE matchmatch criteria
cpe:2.3:o:huawei:emui:10.1.0:*:*:*:*:*:*:*
10.1.1CPE matchmatch criteria
cpe:2.3:o:huawei:emui:10.1.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.1CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.71%
Probability of exploitation in next 30 days
EPSS Percentile
49.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0071 is in the 32nd percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 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

consumer.huawei.com / en/support/bulletin/2020/12
Vendor Advisory