Evolved Programmable Network ManagerApplication · Cisco
CVE-2023-20203
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 · uneditedMultiple vulnerabilities in the web-based management interface of Cisco Prime Infrastructure and Cisco Evolved Programmable Network Manager (EPNM) could allow an authenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack against a user of the interface on an affected device. These vulnerabilities are due to insufficient validation of user-supplied input. An attacker could exploit these vulnerabilities by persuading a user of an affected interface to view a page containing malicious HTML or script content. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information. To exploit these vulnerabilities, the attacker must have valid credentials to access the web-based management interface of the affected device.
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 confidenceMultiple stored cross-site scripting (XSS) vulnerabilities in Cisco Prime Infrastructure and EPNM web-based management interfaces due to insufficient validation of user-supplied input. An authenticated attacker with valid credentials can inject malicious HTML or script content that persists on the affected device, executing in the context of the interface when viewed by other users.
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
Evolved Programmable Network ManagerApplication
< 7.1
Prime InfrastructureApplication
< 3.10.4CVSS 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.
-
Identify the installed Cisco productAccess the web-based management interface and look for the product name in the login page or navigation menu, or check system documentation for the deployed solution nameAffected if The product is either Cisco Prime Infrastructure or Cisco Evolved Programmable Network Manager (EPNM)
-
Determine the installed version numberLog into the web-based management interface and navigate to the About or System Information page, typically found under Administration or Help menus, to locate the exact software versionAffected if The product is one of the affected solutions regardless of version
-
Compare version against affected rangesCheck the version found in the previous step against the vulnerable ranges: EPNM versions below 7.0, and Prime Infrastructure versions below 3.10.4Affected if EPNM version is less than 7.1 or Prime Infrastructure version is less than 3.10.4
-
Verify web-based management interface is enabledConfirm the web-based management interface is accessible by attempting to reach the login page or checking if HTTP/HTTPS services for the management interface are running on the deviceAffected if The web interface is enabled and reachable on the network
-
Confirm authentication is requiredVerify that the management interface requires user authentication by attempting to access protected pages without credentials, or check the authentication configuration settingsAffected if The interface accepts authenticated users (even limited-privilege users can inject the malicious content)
The environment is affected if either EPNM version is below 7.1 or Prime Infrastructure version is below 3.10.4, and the web-based management interface is accessible to authenticated users.
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.
dbcve · scoped3.10.47.1
Apply Cisco security updates when available. Until then, limit interface access to trusted users only and monitor for suspicious activity.
Evolved Programmable Network Manager: 7.1+ | Prime Infrastructure: 3.10.4+
- 1. Identify the affected Cisco product (Evolved Programmable Network Manager or Prime Infrastructure) currently deployed
- 2. Determine the current installed version of the affected product
- 3. For Evolved Programmable Network Manager: Upgrade to version 7.1 or later
- 4. For Prime Infrastructure: Upgrade to version 3.10.4 or later
- 5. After upgrading, verify the new version is correctly installed
- 6. Test the web-based management interface to confirm normal functionality
Generated from the published advisory — verify against the referenced sources before acting.
Fix this in Evolved Programmable Network Manager
Scoped from the published advisory
- Consultation6.0 h
- Implementation24.0 h
- Testing12.0 h
- Review / QA6.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $13,440.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-20203 — 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-2023-20203 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