HOMEVULNERABILITIESCVE-2022-40865
CRITICAL

CVE-2022-40865

CWE-787Published: September 23, 2022· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

Tenda AC15 and AC18 routers V15.03.05.19 contain heap overflow vulnerabilities in the function setSchedWifi with the request /goform/openSchedWifi/

NVD Source

Technical Analysis

CVE-2022-40865 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

tendacn4 product(s)
ac15 firmwareac15ac18 firmwareac18
Source: NVD CPE · 4 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://github.com/CPSeek/Router-vuls/blob/main/Tenda/AC15/setSchedWifi.md
ADVISORYhttps://github.com/CPSeek/Router-vuls/blob/main/Tenda/AC18/setSchedWifi.md
ADVISORYhttps://github.com/CPSeek/Router-vuls/blob/main/Tenda/AC15/setSchedWifi.md
ADVISORYhttps://github.com/CPSeek/Router-vuls/blob/main/Tenda/AC18/setSchedWifi.md

All References (4)

→
https://github.com/CPSeek/Router-vuls/blob/main/Tenda/AC15/setSchedWifi.mdExploit · Third Party Advisory
→
https://github.com/CPSeek/Router-vuls/blob/main/Tenda/AC18/setSchedWifi.mdExploit · Third Party Advisory
→
https://github.com/CPSeek/Router-vuls/blob/main/Tenda/AC15/setSchedWifi.mdExploit · Third Party Advisory
→
https://github.com/CPSeek/Router-vuls/blob/main/Tenda/AC18/setSchedWifi.mdExploit · Third Party Advisory

Quick Facts

CVE IDCVE-2022-40865
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-787
CISA KEVNo
Affected1 vendor(s)
PublishedSep 23, 2022

Related CVEs (CWE-787)

CVE-2026-4746
10.0
CVE-2004-0978
10.0
CVE-2015-0235
10.0
CVE-2004-1287
10.0
CVE-2022-30292
10.0
CVE-2015-5105
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2022-40865 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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