CVE-2023-4595Network attack vector

Unauthenticated file disclosure via crafted URL suffixes

Published Nov 23, 2023 · Updated Aug 2, 2024

Information exposure in BVRP Software SLmail 5.5.0.4433 allows remote attackers to read sensitive server files via crafted URLs. The affected URL handler accepts encoded null, whitespace, wildcard, and related suffix bytes and returns files that should not be externally accessible. No authentication or user interaction is required, and disclosed data includes credential, configuration, and application files.

CVSS severity7.5
High
EPSS probability0.72%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information exposure in BVRP Software SLmail 5.5.0.4433 allows remote attackers to read sensitive server files via crafted URLs. The affected URL handler accepts encoded null, whitespace, wildcard, and related suffix bytes and returns files that should not be externally accessible. No authentication or user interaction is required, and disclosed data includes credential, configuration, and application files.

The record

CVE
CVE-2023-4595
Published
Nov 23, 2023
Updated
Aug 2, 2024
Vendor
BVRP Software
Product
SLmail
Classifications
CWE-538, CAPEC-95, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 23, 2023CVE 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=5.5.0.4433

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

BVRP Software · SLmailversion=5.5.0.4433

Published CVSS scores

6.5National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
7.5Spanish National Cybersecurity Institute, S.A. (INCIBE)CVSS: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-538Insertion of Sensitive Information into Externally-Accessible File or Directory
CAPEC-95WSDL Scanning
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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