CVE-2015-7289
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 · uneditedArris DG860A, TG862A, and TG862G devices with firmware TS0703128_100611 through TS0705125D_031115 have a hardcoded administrator password derived from a serial number, which makes it easier for remote attackers to obtain access via the web management interface, SSH, TELNET, or SNMP.
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 confidenceArris DG860A, TG862A, and TG862G cable modem/gateway devices contain a hardcoded administrator password that is algorithmically derived from the device's serial number. Since the serial number can be obtained or guessed, attackers can compute the corresponding password and gain full administrative access via any management interface (web, SSH, TELNET, or SNMP).
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= ts070593c_073013= ts0703128_100611= ts0703135_112211= ts0705125_062314= ts0705125d_031115CVSS 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
- M
- Authentication
- None
- Confidentiality
- Complete
- Integrity
- Complete
- Availability
- Complete
AV:N/AC:M/Au:N/C:C/I:C/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.
-
Identify Arris device modelLocate the device label on the cable modem/gateway or check the web management interface for the model number. Look for DG860A, TG862A, or TG862G.Affected if The device model is DG860A, TG862A, or TG862G.
-
Check firmware versionAccess the device web interface or CLI and retrieve the firmware version. Compare against the affected versions: ts070593c_073013, ts0703128_100611, ts0703135_112211, ts0705125_062314, ts0705125d_031115.Affected if The installed firmware version exactly matches one of the listed affected versions.
-
Verify default credentials are activeObtain the device serial number from the device label. Use the known algorithm to derive the corresponding password. Attempt to log in to any management interface (web, SSH, TELNET, or SNMP) using the default admin username with this derived password.Affected if The derived password successfully authenticates, indicating the default algorithmic credential is still active.
-
Assess management interface exposureCheck network configuration to determine if web, SSH, TELNET, or SNMP management interfaces are accessible from untrusted networks or the wider internet.Affected if Any management interface is accessible from outside the trusted local network.
You are affected if you own an Arris DG860A, TG862A, or TG862G device running one of the five listed firmware versions AND the default serial-number-derived password is still active AND management interfaces are accessible to attackers.
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 dataImmediately change default credentials on affected devices and restrict access to management interfaces (web, SSH, TELNET, SNMP) using network segmentation or firewall rules. Contact Arris for firmware updates that remove the hardcoded credential derivation.
- Consultation8.0 h
- Implementation16.0 h
- Testing8.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $10,240.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2015-7289 — 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-2015-7289 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