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CVE-2022-40861

23
FAUCET Score

CVE-2022-40861 is a high-severity stack overflow vulnerability (CWE-787) affecting the Tenda AC18 router, specifically firmware version V15.03.05.19. This flaw resides within the formSetQosBand->FUN_0007db78 function, triggered by a crafted request to /goform/SetNetControlList/. With a CVSS v3.1 score of 7.2, successful exploitation by a highly privileged attacker (PR:H) over the network (AV:N) could lead to complete compromise of confidentiality, integrity, and availability (C:H/I:H/A:H). Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
15.03.05.19\(6318\)CPE matchmatch criteria
cpe:2.3:o:tenda:ac18_firmware:15.03.05.19\(6318\):*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.2HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.98%
Probability of exploitation in next 30 days
EPSS Percentile
58.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0098 is in the 45th percentile among its peer group of 5,538 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.3 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 / CPSeek/Router-vuls/blob/main/Tenda/AC18/formSetQosBand.md
ExploitThird Party Advisory