Security readout for executives and security teams
Plain-English summary
CVE-2019-13276 is an unauthenticated code execution flaw in TRENDnet TEW-827DRU routers. A vulnerable device can be attacked from the local network, and from the internet if remote administration is enabled. The source bundle does not name a vendor patch or fixed version.
Executive priority
Prioritize remediation for any exposed or business-critical TEW-827DRU routers. Unauthenticated router code execution can lead to network foothold, traffic interception, or device compromise, but the source bundle does not confirm active exploitation.
Technical view
Firmware up to and including 2.04B03 contains a stack-based buffer overflow in the ssi binary. The described trigger is an overly long query string in a POST request to valid cgi, txt, asp, or js files, allowing arbitrary code execution without authentication.
Likely exposure
Exposure is limited to TRENDnet TEW-827DRU devices running firmware 2.04B03 or earlier. The vulnerability is reachable from the local intranet, and remotely only when remote administration is enabled. The sources do not identify other affected products.
Exploitation context
The CVE references a public GitHub repository for this issue, but the bundle does not provide KEV listing or other evidence of active exploitation. Treat internet-exposed remote administration as the highest-risk condition.
Researcher notes
The affected component is ssi, with unauthenticated stack overflow behavior tied to long query strings in POST requests. Avoid assuming a patch exists from these sources; validate firmware status and remote administration exposure directly.
Mitigation direction
- Inventory TRENDnet TEW-827DRU devices and firmware versions.
- Disable remote administration where it is enabled.
- Restrict router administration to trusted internal networks.
- Check TRENDnet guidance for fixed firmware or replacement advice.
- Retire or isolate devices that cannot be remediated.
Validation and detection
- Confirm whether any TEW-827DRU runs firmware 2.04B03 or earlier.
- Check whether remote administration is enabled or internet-reachable.
- Review perimeter exposure for router management interfaces.
- Verify remediation against vendor guidance before closing the finding.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
Execution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2019-13276 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/fuzzywalls/TRENDNetExploits/tree/master/CVE-2019-13276CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.