Sf250 24 FirmwareOperating system · Cisco
CVE-2019-12718
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 web-based interface of Cisco Small Business Smart and Managed Switches could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the web-based interface. The vulnerability is due to insufficient validation of user-supplied input by the web-based interface of the affected device. An attacker could exploit this vulnerability by persuading a user of the interface to click a malicious link and subsequently access a specific web interface page. 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.
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 confidenceReflected XSS vulnerability in the web-based management interface of Cisco Small Business Smart and Managed Switches. An unauthenticated attacker can inject malicious script via specially crafted URLs that execute when a user clicks a malicious link and navigates to a specific web interface page, allowing execution of arbitrary code in the user's browser context.
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
Sf250 24 FirmwareOperating system
< 2.5.0.90
Sf250 24p FirmwareOperating system
< 2.5.0.90
Sf250 48 FirmwareOperating system
< 2.5.0.90
Sf250 48hp FirmwareOperating system
< 2.5.0.90
Sf250 08 FirmwareOperating system
< 2.5.0.90
Sf250 08hp FirmwareOperating system
< 2.5.0.90
Sf250 10p FirmwareOperating system
< 2.5.0.90
Sf250 18 FirmwareOperating system
< 2.5.0.90CVSS 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
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/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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Access the switch web interface and check the firmware versionLog into the web-based management interface (typically via HTTP/HTTPS to the switch IP address) and navigate to the System Info, About, or Status page where the firmware version is displayedAffected if The displayed firmware version is lower than 2.5.0.90 (for example, 2.4.x or earlier)
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Check the firmware version via CLIConnect to the switch via console or SSH and run the command 'show version' or 'show firmware-version' to retrieve the exact firmware versionAffected if The firmware version shown is less than 2.5.0.90
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Confirm the affected switch modelIdentify the exact switch model number (such as Sf250-24, Sf250-48, etc.) from the web interface or CLI output using 'show version' or 'show system-info'Affected if The switch model is one of the Sf250 series variants listed in the affected products (Sf250-24, Sf250-24p, Sf250-48, Sf250-48hp, Sf250-08, Sf250-08hp, Sf250-10p, or Sf250-18) AND the firmware version is below 2.5.0.90
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Verify if web-based management is enabledIn the web interface, check the Administration or Management settings to confirm whether HTTP or HTTPS web-based management access is enabledAffected if Web-based management is enabled and the firmware version is below 2.5.0.90 (the XSS can only be triggered through the web interface)
You are affected if your Cisco Sf250 series switch is running firmware version lower than 2.5.0.90 and the web-based management interface is enabled.
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 data2.5.0.90
Apply vendor-supplied firmware updates when available; until then, restrict web-based management access to trusted networks only and educate users about not clicking untrusted links.
Fix this in Sf250 24 Firmware
Scoped from the published advisory
- Consultation3.0 h
- Implementation6.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,224.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-12718 — 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-2019-12718 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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- 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
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