CVE-2021-44564Network attack vector

Configuration theft and tampering via unsecured administration channel

Published Jan 6, 2022 · Updated Aug 4, 2024

An unsecured administration channel in Kalkitech SYNC devices running GPC 4.15.3 and earlier allows remote attackers to alter configuration files. Easyconnect transfers device configurations over that channel, allowing a downloaded file to be modified and written back to the device. Exploitation requires network access and the device IP address; configuration access can compromise device confidentiality, integrity, and operation.

CVSS severity8.1
High
EPSS probability0.92%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

An unsecured administration channel in Kalkitech SYNC devices running GPC 4.15.3 and earlier allows remote attackers to alter configuration files. Easyconnect transfers device configurations over that channel, allowing a downloaded file to be modified and written back to the device. Exploitation requires network access and the device IP address; configuration access can compromise device confidentiality, integrity, and operation.

The record

CVE
CVE-2021-44564
Published
Jan 6, 2022
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1565.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 6, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

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

10.0Kalkitech/ASEAV:N/AC:L/Au:N/C:C/I:C/A:C
8.1NIST NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P
8.3Kalkitech/ASEAV:N/AC:L/Au:N/C:C/I:C/A:C/E:F/RL:OF/RC:C

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

T1565.001Stored Data Manipulation

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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