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CVE-2024-4248

25
FAUCET Score

CVE-2024-4248 is a critical stack-based buffer overflow vulnerability affecting Tenda i21 1.0.0.14(4656) firmware, specifically within the formQosManage_user function through manipulation of the ssidIndex argument. With a CVSS score of 8.8 (High), this vulnerability can be exploited remotely with low attack complexity and privileges, potentially leading to high impact on confidentiality, integrity, and availability. There is currently no public exploit code available (Metasploit, Nuclei, ExploitDB), nor is it listed in CISA's KEV catalog, indicating no active exploitation. Community discussion and media coverage are minimal.

Impacted Technologies

VendorProductVersion(s)CPE
1.0.0.14\(4656\)CPE matchmatch criteria
cpe:2.3:o:tenda:i21_firmware:1.0.0.14\(4656\):*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.35%
Probability of exploitation in next 30 days
EPSS Percentile
68.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0135 is in the 66th percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 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 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / abcdefg-png/IoT-vulnerable/blob/main/Tenda/i/i21/formQosManage_user.md
Broken Link
vuldb.com
Permissions RequiredThird Party AdvisoryVDB Entry
vuldb.com
Third Party AdvisoryVDB Entry
vuldb.com
Third Party AdvisoryVDB Entry