CVE-2023-5637Network attack vector

Sensitive executable strings disclosure via unrestricted upload

Published Dec 1, 2023 · Updated May 20, 2026

Unrestricted file upload in ArslanSoft Education Portal before 1.1 allows remote attackers to read sensitive strings within an executable. The Turkish CNA identifies dangerous-type file upload as the weakness but does not disclose the affected upload handler, the validation error, or how the uploaded file exposes executable strings. The network path requires no authentication or user interaction, and the reported consequence is limited to confidentiality loss.

CVSS severity7.5
High
EPSS probability0.63%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Unrestricted file upload in ArslanSoft Education Portal before 1.1 allows remote attackers to read sensitive strings within an executable. The Turkish CNA identifies dangerous-type file upload as the weakness but does not disclose the affected upload handler, the validation error, or how the uploaded file exposes executable strings. The network path requires no authentication or user interaction, and the reported consequence is limited to confidentiality loss.

The record

CVE
CVE-2023-5637
Published
Dec 1, 2023
Updated
May 20, 2026
Vendor
ArslanSoft
Product
Education Portal
Classifications
CWE-434
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 1, 2023CVE publishedPublication date reported by the CVE source.
  2. May 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0 <v1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ArslanSoft · Education Portalversion=0 <v1.1

Published CVSS scores

7.5Computer Emergency Response Team of the Republic of TurkeyCVSS: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-434Unrestricted Upload of File with Dangerous Type

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo