CVE-2022-42080Network attack vector

Service interruption via sched_start_time heap overflow

Published Oct 12, 2022 · Updated May 15, 2025

Heap overflow in Tenda AC1206 firmware 15.03.06.23 allows remote attackers to interrupt router service via a crafted sched_start_time parameter. Processing sched_start_time writes beyond a heap buffer boundary; the published record does not identify the handler or memory-copy operation. No authentication or user interaction is required, and the published impact excludes data disclosure and 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

Heap overflow in Tenda AC1206 firmware 15.03.06.23 allows remote attackers to interrupt router service via a crafted sched_start_time parameter. Processing sched_start_time writes beyond a heap buffer boundary; the published record does not identify the handler or memory-copy operation. No authentication or user interaction is required, and the published impact excludes data disclosure and modification.

The record

CVE
CVE-2022-42080
Published
Oct 12, 2022
Updated
May 15, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1499
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

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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1499Endpoint Denial of Service

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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