CVE-2021-26629Network attack vector

Arbitrary file creation via archive path traversal

Published Apr 26, 2022 · Updated Aug 3, 2024

Path traversal in TOBESOFT XPLATFORM before 9.2.2.284 allows remote attackers to create arbitrary files via crafted .xzip archives. The runtime archive extractor accepts ..\ path segments in archive names and writes entries outside the intended directory during decompression. Exploitation requires a victim runtime to process the crafted archive, and the created file can enable code execution or other system changes when placed in a sensitive location.

CVSS severity8.8
High
EPSS probability1.56%
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 TOBESOFT XPLATFORM before 9.2.2.284 allows remote attackers to create arbitrary files via crafted .xzip archives. The runtime archive extractor accepts ..\ path segments in archive names and writes entries outside the intended directory during decompression. Exploitation requires a victim runtime to process the crafted archive, and the created file can enable code execution or other system changes when placed in a sensitive location.

The record

CVE
CVE-2021-26629
Published
Apr 26, 2022
Updated
Aug 3, 2024
Vendor
TOBESOFT
Product
XPLATFORM
Classifications
CWE-22
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 26, 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?

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

  1. Affected versionversion=unspecified <=9.2.2.280

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

TOBESOFT · XPLATFORMversion=unspecified <=9.2.2.280

Published CVSS scores

6.8NVDAV:N/AC:M/Au:N/C:P/I:P/A:P
8.8KrCERT/CCCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/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.

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

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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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