CVE-2021-43360Network attack vector

Authenticated code execution via unrestricted task deserialization

Published Dec 1, 2021 · Updated Sep 17, 2024

Insecure deserialization in Sunnet eHRD CTMS 8 and 9 allows remote authenticated users to execute code through the e-mail task scheduler. The scheduler reconstructs serialized objects from database-controlled input without adequately validating or restricting the permitted objects. Exploitation requires a logged-in account with database access privileges and permits system control or service interruption.

CVSS severity8.8
High
EPSS probability2.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insecure deserialization in Sunnet eHRD CTMS 8 and 9 allows remote authenticated users to execute code through the e-mail task scheduler. The scheduler reconstructs serialized objects from database-controlled input without adequately validating or restricting the permitted objects. Exploitation requires a logged-in account with database access privileges and permits system control or service interruption.

The record

CVE
CVE-2021-43360
Published
Dec 1, 2021
Updated
Sep 17, 2024
Vendor
Sunnet Technology Co., Ltd.
Product
eHRD CTMS
Classifications
CWE-502, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 1, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=8
  2. Affected versionversion=9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Sunnet Technology Co., Ltd. · eHRD CTMSversion=8; version=9

Published CVSS scores

8.8TWCERT/CCCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.0NIST NVDAV:N/AC:L/Au:S/C:C/I:C/A: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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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