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CVE-2023-40904

25
FAUCET Score

CVE-2023-40904 is a critical stack overflow vulnerability affecting Tenda AC10 v4 routers, specifically firmware version US_AC10V4.0si_V16.03.10.13_cn. This flaw allows unauthenticated attackers to execute arbitrary code or cause a denial of service by sending crafted requests to the /goform/setMacFilterCfg endpoint, manipulating the macFilterType and deviceList parameters. With a CVSS score of 9.8, this vulnerability poses a severe risk due to its network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. Currently, there is no public exploit code available, nor is there evidence of active exploitation, and it has received minimal community or media attention.

Impacted Technologies

VendorProductVersion(s)CPE
16.03.10.13CPE matchmatch criteria
cpe:2.3:o:tenda:ac10v4_firmware:16.03.10.13:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.78%
Probability of exploitation in next 30 days
EPSS Percentile
52.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0078 is in the 36th 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

github.com / peris-navince/founded-0-days/blob/main/ac10/formSetMacFilterCfg/1.md
ExploitThird Party Advisory