CVE-2023-4539
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedUse of a hard-coded password for a special database account created during Comarch ERP XL installation allows an attacker to retrieve embedded sensitive data stored in the database. The password is same among all Comarch ERP XL installations. This issue affects ERP XL: from 2020.2.2 through 2023.2.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceComarch ERP XL contains a hardcoded password for a special database account created during installation. This account, present in all installations with the same credentials, can be used by an attacker to directly access the database and retrieve embedded sensitive data. The vulnerability affects versions 2020.2.2 through 2023.2.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data>= 2020.2.2, <= 2023.2CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
-
Identify installed Comarch ERP XL versionAccess the system information panel within the Comarch ERP XL application or check the application's 'About' section. Alternatively, consult the installation documentation or contact your system administrator for the exact version number.Affected if The installed version falls within the range >= 2020.2.2 and <= 2023.2
-
Locate database configuration filesSearch the Comarch ERP XL installation directory for configuration files that contain database connection settings, typically named with patterns like 'config', 'connection', or 'database' in the filename. Examine XML, INI, or JSON configuration files for database account definitions.Affected if A database user account with hardcoded credentials (same across all installations) is found in the configuration files
-
Verify presence of special database accountConnect to the Comarch ERP XL database using administrative credentials and query for database users. Look for accounts that were created during the initial installation process and are not managed through the application's standard user management system.Affected if A dedicated installation-time database account exists with static, identical credentials across all installations
-
Review database access controlsExamine database user permissions and roles, particularly for the special installation account. Check if this account has broad read access to sensitive data tables containing customer information, financial records, or other confidential data.Affected if The special database account has extensive read privileges to sensitive tables and can be accessed using hardcoded credentials
A Comarch ERP XL installation is affected if the version is between 2020.2.2 and 2023.2 AND a database account with hardcoded credentials created during installation exists and retains access to sensitive data.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataContact Comarch for the official patch to remediate this vulnerability. As an interim measure, review database access controls and monitor for unauthorized access to the database using the hardcoded credentials.
- Consultation6.0 h
- Implementation12.0 h
- Testing6.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $7,968.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-4539 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2023-4539 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data