Dta Control SystemOperating system · Cisco
CVE-2015-0744
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 · uneditedCisco DTA Control System (DTACS) 4.0.0.9 and Cisco Headend System Release allow remote attackers to cause a denial of service (CPU and memory consumption, and TCP service outage) via (1) a SYN flood or (2) another type of TCP traffic flood, aka Bug IDs CSCus50642, CSCus50662, CSCus50625, CSCus50657, and CSCus68315.
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 confidenceThe Cisco DTA Control System (DTACS) 4.0.0.9 and Cisco Headend System Release contain multiple vulnerabilities where the systems fail to properly handle TCP-based flood attacks, specifically SYN floods and other TCP traffic floods. Successful exploitation causes excessive CPU and memory consumption, resulting in complete TCP service outage.
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
Dta Control SystemOperating system
= 4.0.0.9
Headend Digital Broadband Delivery SystemOperating system
all versions
Headend System ReleaseOperating system
= 2.5= 2.7= 3.2= 3.5= 3.7= i4.3CVSS 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
- Authentication
- None
- Confidentiality
- None
- Integrity
- None
- Availability
- Complete
AV:N/AC:L/Au:N/C:N/I:N/A:C
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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Identify if Cisco DTA Control System is installedCheck system for Cisco DTA Control System (DTACS) software installation and note the version numberAffected if The installed version is exactly 4.0.0.9
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Identify if Cisco Headend Digital Broadband Delivery System is presentDetermine whether the system is running Cisco Headend Digital Broadband Delivery SystemAffected if Any version of this product is installed
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Identify Cisco Headend System Release versionCheck the installed version of Cisco Headend System ReleaseAffected if The version is 2.5, 2.7, 3.2, 3.5, 3.7, or i4.3
The system is affected if it runs Cisco DTA Control System version 4.0.0.9, any version of Cisco Headend Digital Broadband Delivery System, or Cisco Headend System Release versions 2.5, 2.7, 3.2, 3.5, 3.7, or i4.3
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 dataImplement network-level protections such as SYN cookies, TCP connection limits, rate limiting, and DDoS mitigation solutions at network boundaries. If patches are available from Cisco, apply them promptly.
Fix this in Dta Control System
Scoped from the published advisory
- Consultation4.0 h
- Implementation8.0 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 $5,120.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2015-0744 — 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-2015-0744 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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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