CVE-2021-43358Network attack vector

Unauthenticated system-file disclosure via URL traversal

Published Dec 1, 2021 · Updated Sep 17, 2024

Path traversal in Sunnet Technology eHRD CTMS 8 and 9 allows remote attackers to download system files via crafted URLs. The URL-processing path fails to filter traversal special characters before resolving requests against restricted filesystem paths. No authentication or user interaction is required, and successful requests disclose readable system information without altering it.

CVSS severity7.5
High
EPSS probability2.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Sunnet Technology eHRD CTMS 8 and 9 allows remote attackers to download system files via crafted URLs. The URL-processing path fails to filter traversal special characters before resolving requests against restricted filesystem paths. No authentication or user interaction is required, and successful requests disclose readable system information without altering it.

The record

CVE
CVE-2021-43358
Published
Dec 1, 2021
Updated
Sep 17, 2024
Vendor
Sunnet Technology Co., Ltd.
Product
eHRD CTMS
Classifications
CWE-22, T1190
Attack vector
network
Privileges
unauthenticated

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 privilegesunauthenticated

What is affected?

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

Published CVSS scores

7.5TWCERT/CCCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
7.8NIST NVDAV:N/AC:L/Au:N/C:C/I:N/A:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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 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-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1190Exploit Public-Facing Application

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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