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CVE-2026-3971

29
FAUCET Score

CVE-2026-3971 details a high-severity stack-based buffer overflow vulnerability in Tenda i3 1.0.0.6(2204) firmware, specifically within the formwrlSSIDset function. This flaw allows an authenticated remote attacker to manipulate the 'index/GO' argument, potentially leading to full compromise of confidentiality, integrity, and availability. Rated with a CVSS score of 8.8 (HIGH), the vulnerability poses a significant risk for affected devices. Although the exploit has been publicly disclosed, there is currently no evidence of active exploitation in the wild, nor are there readily available exploit modules in common frameworks like Metasploit or ExploitDB. Community attention regarding this vulnerability remains minimal.

Impacted Technologies

VendorProductVersion(s)CPE
1.0.0.6\(2204\)CPE matchmatch criteria
cpe:2.3:o:tenda:i3_firmware:1.0.0.6\(2204\):*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

7.4HIGH

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
VS Confidentiality
HIGH
VS Integrity
HIGH
VS Availability
HIGH
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
PROOF_OF_CONCEPT
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.64%
Probability of exploitation in next 30 days
EPSS Percentile
46.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0063 is in the 38th 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 / Svigo-o/Tenda_vul/tree/main/tenda-i3-formwrlSSIDset-go-buffer-overflow
ExploitThird Party Advisory
github.com / Svigo-o/Tenda_vul/tree/main/tenda-i3-formwrlSSIDset-index-buffer-overflow
ExploitThird Party Advisory
vuldb.com
Permissions RequiredVDB Entry
vuldb.com
Third Party AdvisoryVDB Entry
vuldb.com
Third Party AdvisoryVDB Entry
vuldb.com
Third Party AdvisoryVDB Entry
tenda.com.cn
Product