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CVE-2025-71020

27
FAUCET Score

CVE-2025-71020 describes a stack overflow vulnerability in the Tenda AX-1806 router (v1.0.0.1), specifically within the sub_4C408 function's security parameter. This flaw allows an unauthenticated attacker to trigger a Denial of Service (DoS) by sending a specially crafted request, earning a CVSS score of 7.5 (HIGH). While the vulnerability is easily exploitable over the network with low attack complexity, there is currently no public exploit code available (Metasploit, Nuclei, ExploitDB). Despite the lack of active exploitation or media coverage, the CVE has garnered significant community discussion, indicating awareness among security researchers.

Impacted Technologies

VendorProductVersion(s)CPE
1.0.0.1CPE matchmatch criteria
cpe:2.3:o:tenda:ax1806_firmware:1.0.0.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.31%
Probability of exploitation in next 30 days
EPSS Percentile
23.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0031 is in the 6th percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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 / 0-fool/VulnbyCola/blob/main/Tenda/AX-1806/5/1.md
ExploitThird Party Advisory