dbcve.org
Evolved Programmable Network ManagerApplication · Cisco

CVE-2021-34733

MEDIUM · 5.5 CVSS v3.1 Published 2021-09-02
Fix available
A fix is available. Upgrade to 3.8 / 5.0 or later.
See remediation →
57/100
Remediation priority · Elevated
Zero-click

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 · unedited
A vulnerability in the CLI of Cisco Prime Infrastructure and Cisco Evolved Programmable Network (EPN) Manager could allow an authenticated, local attacker to access sensitive information stored on the underlying file system of an affected system. This vulnerability exists because sensitive information is not sufficiently secured when it is stored. An attacker could exploit this vulnerability by gaining unauthorized access to sensitive information on an affected system. A successful exploit could allow the attacker to create forged authentication requests and gain unauthorized access to the affected system.

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 · moderate confidence

A vulnerability in the CLI of Cisco Prime Infrastructure and Cisco EPN Manager allows authenticated local attackers to access sensitive information stored insecurely on the underlying file system. The sensitive data (likely credentials or authentication tokens) can be extracted and used to forge authentication requests, enabling unauthorized access to the affected system.

MitigationApply the vendor-supplied security patch from Cisco for this vulnerability. Prior to patching, restrict local CLI access to trusted administrators and implement monitoring for suspicious file system access patterns.

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
Affected:< 5.0
Prime InfrastructureApplication
Affected:< 3.8

CVSS 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
Local
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:L/AC:L/PR:L/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 checks

Work through these to decide whether this CVE applies to you.

  1. Identify the installed Cisco product
    Run 'show version' or check the product name in the CLI/login screen to determine if this is Cisco Prime Infrastructure or Cisco Evolved Programmable Network Manager
    Affected if The product is Cisco Prime Infrastructure or Cisco EPN Manager
  2. Check the installed version against affected ranges
    Run 'show version' to display the installed software version. For Prime Infrastructure, compare to < 3.8. For EPN Manager, compare to < 5.0
    Affected if The version number is lower than 3.8 for Prime Infrastructure or lower than 5.0 for EPN Manager
  3. Verify CLI access is enabled
    Confirm that local CLI access is available to the system via SSH, console, or direct terminal access
    Affected if CLI access is available to authenticated local users
  4. Check for insecurely stored sensitive files
    Inspect the file system for configuration files, credential stores, or authentication token files that may be stored with weak permissions or in plaintext
    Affected if Sensitive files containing credentials or tokens are found with overly permissive access controls or in unencrypted format

A system is affected if it runs Cisco Prime Infrastructure below version 3.8 or Cisco EPN Manager below version 5.0, has CLI access enabled, and contains sensitive credential or token files stored with weak file system permissions.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 · scoped
Upgrade available Upgrade to 3.8 / 5.0 or later
Fixed in 3.85.0
Interim mitigation

Apply the vendor-supplied security patch from Cisco for this vulnerability. Prior to patching, restrict local CLI access to trusted administrators and implement monitoring for suspicious file system access patterns.

Recommended fix High confidence

Cisco Prime Infrastructure 3.8+ or EPN Manager 5.0+

  1. 1. Identify which Cisco product is in use: Prime Infrastructure or Evolved Programmable Network (EPN) Manager
  2. 2. Determine current installed version via CLI or web interface
  3. 3. For Prime Infrastructure: Plan upgrade to version 3.8 or later
  4. 4. For Evolved Programmable Network Manager: Plan upgrade to version 5.0 or later
  5. 5. Review Cisco release notes for upgrade prerequisites and compatibility requirements
  6. 6. Perform full system backup including configuration and database
  7. 7. Execute upgrade following Cisco official upgrade documentation
  8. 8. Verify successful installation and validate that the vulnerability is resolved
Caveat Review compatibility notes for integrations and ensure migration from older PI/EPN versions follows documented upgrade path

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Evolved Programmable Network Manager Scoped from the published advisory
  • Consultation4.0 h
  • Implementation4.0 h
  • Testing4.0 h
  • Review / QA2.0 h
14.0 hours of engineering $2,480
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,968.

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2021-34733 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.

Get it on GitHub Scan in the browser

References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2021-34733 in production — separate from our analysis above.

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.

What this is

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.

What belongs here
  • 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