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24f2xg Router FirmwareOperating system · Kraftway

CVE-2018-15355

MEDIUM · 5.9 CVSS v3.0 Published 2018-08-17
Fix available
A fix is available. Upgrade to after 3.5.30.1118 or later.
See remediation →
68/100
Remediation priority · Elevated
Remotely reachable No privileges 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
Usage of SSLv2 and SSLv3 leads to transmitted data decryption in Kraftway 24F2XG Router firmware 3.5.30.1118.

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 confidence

The Kraftway 24F2XG Router firmware 3.5.30.1118 supports deprecated SSLv2 and SSLv3 protocols, which contain known cryptographic weaknesses allowing an attacker to decrypt transmitted data. An unauthenticated network attacker can exploit this to intercept sensitive communications.

MitigationDisable SSLv2 and SSLv3 protocols on the router and upgrade to TLS 1.2 or higher. If the firmware cannot support modern TLS versions, consider replacing the device with a supported model.

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
24f2xg Router FirmwareOperating system
Affected:<= 3.5.30.1118

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
Network
Complexity
High
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.0/AV:N/AC:H/PR:N/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 device model
    Locate the router model number on the physical device or in the device management interface
    Affected if The device is a Kraftway 24F2XG Router
  2. Check the installed firmware version
    Access the router's web interface or CLI and locate the firmware version information, typically found in System, Status, or About sections
    Affected if The firmware version is 3.5.30.1118 or lower
  3. Verify SSL/TLS protocol configuration
    Access the router's SSL/TLS or security settings in the web management interface and inspect which protocol versions are enabled
    Affected if SSLv2 or SSLv3 protocols are listed as enabled options
  4. Test for SSLv2/SSLv3 exposure from the network
    Use an SSL scanning tool such as nmap with the ssl-enum-ciphers script or testssl.sh against the router's IP address on ports 443, 8443, or other management ports
    Affected if The scan reports SSLv2 or SSLv3 as available or accepted

You are affected if you have a Kraftway 24F2XG Router running firmware version 3.5.30.1118 or lower with SSLv2 or SSLv3 protocols enabled or exposed on the network.

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.

From vendor data
Upgrade available Upgrade to a release after 3.5.30.1118
Interim mitigation

Disable SSLv2 and SSLv3 protocols on the router and upgrade to TLS 1.2 or higher. If the firmware cannot support modern TLS versions, consider replacing the device with a supported model.

Fix this in 24f2xg Router Firmware Scoped from the published advisory
  • Consultation3.0 h
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA2.0 h
12.0 hours of engineering $2,130
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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-2018-15355 in production — separate from our analysis above.

No notes yet

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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