CVE-2022-42081Network attack vector

Unauthenticated router crash via sched_end_time overflow

Published Oct 12, 2022 · Updated May 15, 2025

Stack overflow in Tenda AC1206 firmware 15.03.06.23_multi_TD01 allows remote attackers to crash the router via sched_end_time. Request processing accepts an oversized sched_end_time value and writes beyond a stack buffer, although the public report does not identify the handler or copy routine. No authentication or user interaction is required, and the documented consequence is loss of availability rather than data disclosure or modification.

CVSS severity7.5
High
EPSS probability0.85%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack overflow in Tenda AC1206 firmware 15.03.06.23_multi_TD01 allows remote attackers to crash the router via sched_end_time. Request processing accepts an oversized sched_end_time value and writes beyond a stack buffer, although the public report does not identify the handler or copy routine. No authentication or user interaction is required, and the documented consequence is loss of availability rather than data disclosure or modification.

The record

CVE
CVE-2022-42081
Published
Oct 12, 2022
Updated
May 15, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 12, 2022CVE publishedPublication date reported by the CVE source.
  2. May 15, 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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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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