Security readout for executives and security teams
Plain-English summary
CVE-2026-3101 affects Intelbras TIP 635G firmware 1.12.3.5. An authenticated remote user can abuse the device’s Ping feature to inject operating-system commands. Public exploit material is referenced, but CISA KEV does not list active exploitation. The vendor reportedly did not respond, and no vendor fix is named in the provided sources.
Executive priority
Treat as a prompt network-device hygiene issue. Public exploit material and no named vendor fix increase urgency, but authentication is required and active exploitation is not confirmed. Prioritize exposed or poorly controlled devices first.
Technical view
The issue is OS command injection in the TIP 635G Ping Handler, mapped to CWE-77 and CWE-78. The CVSS v2 score is 6.5 with network access, low complexity, and single authentication required. Sources describe public proof-of-concept availability and possible confidentiality, integrity, and availability impact.
Likely exposure
Organizations using Intelbras TIP 635G devices on firmware 1.12.3.5 are exposed, especially if administrative interfaces are reachable from untrusted networks or use weak credentials. Exposure depends on authentication access to the Ping function.
Exploitation context
The source bundle states the exploit has been made public and could be used. It does not establish active exploitation, and KEV is false. The attack is remote but requires authentication, which reduces opportunistic risk compared with unauthenticated RCE.
Researcher notes
Evidence is based on the CVE/VulDB record and listed advisory references. The affected component is identified as the Ping Handler, but the exact vulnerable code path is not detailed in the bundle. Avoid assuming other Intelbras models or firmware versions are affected without confirmation.
Mitigation direction
- Check Intelbras guidance for updated firmware or official mitigations.
- Restrict device administration to trusted management networks or VPN access.
- Remove internet exposure for TIP 635G management interfaces.
- Rotate and strengthen administrative credentials on affected devices.
- Monitor for unusual command execution, configuration changes, or unexpected outbound traffic.
- Consider replacement or isolation if no supported firmware is available.
Validation and detection
- Inventory Intelbras TIP 635G devices and record firmware versions.
- Confirm whether any device runs firmware 1.12.3.5.
- Verify administrative interfaces are not internet-accessible.
- Review account lists for unauthorized or shared administrative access.
- Check logs for suspicious use of diagnostics or Ping features.
- Track vendor and CVE updates for patch availability.
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.
CWE-77: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCWE-78: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution 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-2026-3101 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.5 (2.0)
- Known Exploited
- No
- Published
Vector: AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR
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 vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR86.4Primary CVE scoreVulnerability scoring details
Base CVSS 2.0 score
6.5MediumVector: AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR
Source materials
- CVE List V5 sourceCVE List V5
- VDB-347527 | Intelbras TIP 635G Ping os command injectionCVE reference · vdb-entry
- VDB-347527 | CTI Indicators (IOB, IOC, TTP)CVE reference · signature, permissions-required
- Submit #757986 | Intelbras TIP 635G 1.12.3.5 OS Command InjectionCVE reference · third-party-advisory
- https://www.notion.so/eldruin/Intelbras-TIP-635G-Authenticated-OS-Command-Injection-Leading-to-Root-RCE-30627474cccb80929328e7c3b3ea0f9bCVE reference · exploit
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.
Improper Neutralization of Special Elements used in a Command ('Command Injection')
Improper Neutralization of Special Elements used in a Command ('Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.