CVE-2022-40846Public exploitNetwork attack vector

Stored XSS via unsanitized connected-device hostname

Published Nov 15, 2022 · Updated Apr 30, 2025

Stored XSS in Tenda W15Ev2 firmware 15.11.0.10(1576) allows remote authenticated users to execute JavaScript via a saved hostname. The homepage inserts an unchecked connected-device hostname into a title string; a crafted quote closes that context and leaves an event handler executable. Administrative access is required to rename the host, and a later homepage view executes the script during periodic QOS refreshes and exposes session cookies.

CVSS severity4.8
Medium
EPSS probability0.58%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Tenda W15Ev2 firmware 15.11.0.10(1576) allows remote authenticated users to execute JavaScript via a saved hostname. The homepage inserts an unchecked connected-device hostname into a title string; a crafted quote closes that context and leaves an event handler executable. Administrative access is required to rename the host, and a later homepage view executes the script during periodic QOS refreshes and exposes session cookies.

The record

CVE
CVE-2022-40846
Published
Nov 15, 2022
Updated
Apr 30, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1539
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Nov 15, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 30, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1539Steal Web Session Cookie

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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