CVE-2022-21193Network attack vector

Unauthenticated file disclosure via template directive injection

Published Feb 8, 2022 · Updated Aug 3, 2024

Directory traversal in TAGAWA Takao TransmitMail 2.5.0 through 2.6.1 allows remote attackers to read arbitrary server files. TransmitMail.php passes HTML-escaped form input through its template engine without neutralizing brace-delimited template directives, enabling injected include paths to escape the template directory. The request needs no authentication or user interaction; however, the coordinated JVN advisory assigns this directory-traversal behavior to CVE-2022-22146 rather than this identifier.

CVSS severity7.5
High
EPSS probability2.00%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Directory traversal in TAGAWA Takao TransmitMail 2.5.0 through 2.6.1 allows remote attackers to read arbitrary server files. TransmitMail.php passes HTML-escaped form input through its template engine without neutralizing brace-delimited template directives, enabling injected include paths to escape the template directory. The request needs no authentication or user interaction; however, the coordinated JVN advisory assigns this directory-traversal behavior to CVE-2022-22146 rather than this identifier.

The record

CVE
CVE-2022-21193
Published
Feb 8, 2022
Updated
Aug 3, 2024
Vendor
TAGAWA Takao
Product
TransmitMail
Classifications
CWE-22, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 8, 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=2.5.0 to 2.6.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

TAGAWA Takao · TransmitMailversion=2.5.0 to 2.6.1

Published CVSS scores

5.0NIST NVDAV:N/AC:L/Au:N/C:P/I:N/A:N
6.1JPCERT/CC and IPA JVNCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
4.3JPCERT/CC and IPA JVNAV:N/AC:M/Au:N/C:N/I:P/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 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')
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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