CVE-2026-9628
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 weakness has been identified in UTT HiPER 1200GW up to 2.5.3-170306. Affected is an unknown function of the file /goform/formPptpClientConfig of the component Web Management Interface. This manipulation of the argument PPTP server address/username/password/tunnel name causes stack-based buffer overflow. The attack may be initiated remotely. The exploit has been made available to the public and could be used for attacks.
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 confidenceStack-based buffer overflow in the web management interface of UTT HiPER 1200GW routers (firmware up to 2.5.3-170306). The vulnerability exists in the /goform/formPptpClientConfig handler where the PPTP server address, username, password, and tunnel name parameters are not properly bounds-checked before being copied to stack buffers, allowing remote code execution.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
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
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/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.
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Identify the device modelAccess the device web management interface or check physical device labeling to confirm the exact model is UTT HiPER 1200GWAffected if The device is not a UTT HiPER 1200GW model
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Check the firmware versionLog into the web management interface and navigate to System Status or Firmware Upgrade section to view the current firmware version. Compare it against 2.5.3-170306Affected if Firmware version is 2.5.3-170306 or earlier
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Verify PPTP client is enabledIn the web interface, navigate to VPN settings or PPTP client configuration section. Check if the PPTP client functionality is turned on or configuredAffected if PPTP client is enabled or configured with any server/credentials
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Confirm web management interface accessibilityAttempt to access the /goform/formPptpClientConfig endpoint or verify the web interface is reachable on the deviceAffected if Web management interface is accessible from untrusted networks
A user is affected if they own a UTT HiPER 1200GW device running firmware version 2.5.3-170306 or earlier AND have the PPTP client feature enabled with the web interface accessible to potential 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 dataRestrict access to the device's web management interface to trusted networks only; consider replacing the device if no vendor patch is available, as PPTP is inherently deprecated and the exploitation is publicly available.
- Consultation8.0 h
- Implementation12.0 h
- Testing6.0 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 $8,608.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-9628 — 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-2026-9628 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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