Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2017-2721

17
FAUCET Score

CVE-2017-2721 describes a Factory Reset Protection (FRP) bypass vulnerability affecting specific Huawei smartphone models running particular software versions. An attacker can exploit a flaw within the Swype Keyboard during the device re-configuration process to update the Google account, thereby bypassing the FRP function. This vulnerability has a CVSS v3.0 score of 4.6 (Medium), indicating a physical attack vector with low complexity and high impact on integrity, but no impact on confidentiality or availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
berlin-l21c10b130CPE matchmatch criteria
cpe:2.3:o:huawei:berlin-l21_firmware:berlin-l21c10b130:*:*:*:*:*:*:*
berlin-l21c185b133CPE matchmatch criteria
cpe:2.3:o:huawei:berlin-l21_firmware:berlin-l21c185b133:*:*:*:*:*:*:*
berlin-l21hnc10b131CPE matchmatch criteria
cpe:2.3:o:huawei:berlin-l21hn_firmware:berlin-l21hnc10b131:*:*:*:*:*:*:*
berlin-l21hnc185b140CPE matchmatch criteria
cpe:2.3:o:huawei:berlin-l21hn_firmware:berlin-l21hnc185b140:*:*:*:*:*:*:*
berlin-l21hnc432b151CPE matchmatch criteria
cpe:2.3:o:huawei:berlin-l21hn_firmware:berlin-l21hnc432b151:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

4.6MEDIUM

CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector
PHYSICAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
0.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.20%
Probability of exploitation in next 30 days
EPSS Percentile
9.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0020 is in the 18th percentile among its peer group of 1,532 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 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 0.2 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-20170920-01-frpbypass-en
Issue TrackingVendor Advisory