Vsmart ControllerApplication · Cisco
CVE-2019-1651
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 · uneditedA vulnerability in the vContainer of the Cisco SD-WAN Solution could allow an authenticated, remote attacker to cause a denial of service (DoS) condition and execute arbitrary code as the root user. The vulnerability is due to improper bounds checking by the vContainer. An attacker could exploit this vulnerability by sending a malicious file to an affected vContainer instance. A successful exploit could allow the attacker to cause a buffer overflow condition on the affected vContainer, which could result in a DoS condition that the attacker could use to execute arbitrary code as the root user.
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 confidenceThis is a buffer overflow vulnerability in the vContainer component of Cisco SD-WAN Solution caused by improper bounds checking. An authenticated, remote attacker can send a malicious file to an affected vContainer instance, triggering a buffer overflow that can cause denial of service and allow arbitrary code execution as root user.
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
Vsmart ControllerApplication
all versionsCVSS 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
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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 if the system is a Cisco Vsmart ControllerCheck the device type and model information using 'show version' or 'show hardware' commands typically available in Cisco SD-WAN CLI. Look for vsmart or Vsmart Controller identifiers in the system output.Affected if The system is identified as a Cisco Vsmart Controller device (all versions are affected)
-
Confirm Vsmart Controller software versionExecute 'show version' or 'show software' commands on the Vsmart Controller CLI to obtain the installed software version number.Affected if Any version of Cisco Vsmart Controller software is running (vulnerability affects all versions)
-
Verify vContainer component statusCheck if vContainer feature is enabled on the Vsmart Controller by looking for vContainer-related processes, configurations, or ports. Consult the device documentation for the specific command to display vContainer status.Affected if vContainer component is enabled and accessible on the Vsmart Controller
-
Check for unauthorized authenticated sessionsReview authentication logs, session logs, or use 'show sessions' or 'show login' commands to identify any unexpected or unauthorized authenticated sessions to the vContainer management interface.Affected if Unknown or unauthorized authenticated sessions are present in vContainer logs or active sessions
-
Look for indicators of buffer overflow exploitationExamine system logs, crash dumps, or core files for signs of buffer overflow, unexpected process terminations, or privilege escalation indicators. Check for any unexpected files or processes that may indicate code execution as root.Affected if Evidence of buffer overflow, unexpected root-level processes, or compromise artifacts are found on the system
The environment is affected if the system is running any version of Cisco Vsmart Controller with vContainer component enabled, since all versions of this product are vulnerable to CVE-2019-1651.
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 dataApply the relevant Cisco patch for this vulnerability in the SD-WAN solution. Since authentication is required, ensure strict access controls and monitor for unauthorized authenticated sessions to the vContainer management interfaces.
Fix this in Vsmart Controller
Scoped from the published advisory
- Consultation3.0 h
- Implementation4.0 h
- Testing6.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,416.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-1651 — 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-2019-1651 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