CVE-2021-2116
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 · uneditedVulnerability in the Oracle Application Express Opportunity Tracker component of Oracle Database Server. The supported version that is affected is Prior to 20.2. Easily exploitable vulnerability allows low privileged attacker having Valid User Account privilege with network access via HTTP to compromise Oracle Application Express Opportunity Tracker. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Oracle Application Express Opportunity Tracker, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Application Express Opportunity Tracker accessible data as well as unauthorized read access to a subset of Oracle Application Express Opportunity Tracker accessible data. CVSS 3.1 Base Score 5.4 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N).
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 confidenceVulnerability in Oracle Application Express Opportunity Tracker (versions prior to 20.2) allows a low-privileged attacker with a valid user account to perform unauthorized read, insert, update, and delete operations on a subset of the application's accessible data via HTTP. The attack requires human interaction and results in low confidentiality and integrity impacts.
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< 20.2CVSS 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
- Low
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/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.
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Identify if Oracle Application Express is installedQuery the APEX_VERSION view or check for APEX-related schemas in the database (e.g., SELECT version FROM apex_version WHERE component = 'APEX'). Alternatively, check for APEX schema existence in the database.Affected if APEX is installed and the version is displayed
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Determine the installed APEX versionRun SELECT version_no FROM apex_release or query the APEX_VERSION view to obtain the exact version number.Affected if The version number is lower than 20.2 (e.g., 20.1, 5.x, etc.)
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Check if Opportunity Tracker application existsQuery APEX_APPLICATIONS (or equivalent) for applications with names containing 'Opportunity Tracker' or 'Opportunity' to determine if this sample application is installed. Alternatively, check via APEX administration UI.Affected if The Opportunity Tracker application is present in the APEX installation
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Verify low-privileged user accounts existQuery database user accounts or check APEX user accounts to identify accounts that would have access to Opportunity Tracker. Look for non-admin users with standard or read-only privileges.Affected if At least one valid low-privileged user account exists in the system that can access Opportunity Tracker
You are affected if APEX version is below 20.2 AND the Opportunity Tracker application is installed AND at least one low-privileged user has access to it.
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 data20.2
Upgrade Oracle Application Express to version 20.2 or later to remediate this vulnerability.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2021-2116 — 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-2021-2116 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
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- Version or environment caveats, and links to real fixes
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