CVE-2022-37819Public exploitNetwork attack vector

Router crash or code execution via unchecked strcpy

Published Aug 25, 2022 · Updated Aug 3, 2024

Stack overflow in Tenda AX1803 1.0.0.1 allows remote authenticated users to crash the router or execute code via a crafted timezone value. The fromSetSysTime function copies the untrusted timeZone value with strcpy into the fixed-size v22 stack array without checking its length. Access to the authenticated /goform/SetSysTimeCfg management endpoint is required; the published proof of concept demonstrates a crash and controlled program execution.

CVSS severity7.8
High
EPSS probability0.34%
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 AX1803 1.0.0.1 allows remote authenticated users to crash the router or execute code via a crafted timezone value. The fromSetSysTime function copies the untrusted timeZone value with strcpy into the fixed-size v22 stack array without checking its length. Access to the authenticated /goform/SetSysTimeCfg management endpoint is required; the published proof of concept demonstrates a crash and controlled program execution.

The record

CVE
CVE-2022-37819
Published
Aug 25, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 25, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record 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 privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1190Exploit Public-Facing Application

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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