CVE-2023-26877Public exploitNetwork attack vector

Authenticated code execution via unrestricted PHP upload

Published Jun 26, 2024 · Updated Aug 2, 2024

Unrestricted file upload in SoftExpert Excellence Suite 2.1 allows remote authenticated users to execute arbitrary code via a PHP file. The form/efms_exec_html/file_upload_parser.php endpoint accepts an executable .php payload and stores it in a web-reachable temporary path without blocking its dangerous type. A valid se-authentication-token is required; requesting the stored file causes the server's PHP runtime to execute the uploaded code.

CVSS severity6.3
Medium
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in SoftExpert Excellence Suite 2.1 allows remote authenticated users to execute arbitrary code via a PHP file. The form/efms_exec_html/file_upload_parser.php endpoint accepts an executable .php payload and stores it in a web-reachable temporary path without blocking its dangerous type. A valid se-authentication-token is required; requesting the stored file causes the server's PHP runtime to execute the uploaded code.

The record

CVE
CVE-2023-26877
Published
Jun 26, 2024
Updated
Aug 2, 2024
Vendor
SoftExpert
Product
SoftExpert Excellence Suite
Classifications
CWE-94, T1505.003
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 26, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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=v.2.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

SoftExpert · SoftExpert Excellence Suiteversion=v.2.1

Published CVSS scores

6.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

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.

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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 exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1505.003Server Software Component: Web Shell

Public exploit references

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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