CVE-2026-2564

8.1 HIGH

📋 TL;DR

This vulnerability in Intelbras VIP 3260 Z IA devices allows attackers to bypass password recovery mechanisms through the /OutsideCmd endpoint. It affects systems running version 2.840.00IB005.0.T, potentially enabling unauthorized access to device administration. The attack can be launched remotely but requires significant technical sophistication.

💻 Affected Systems

Products:
  • Intelbras VIP 3260 Z IA
Versions: 2.840.00IB005.0.T
Operating Systems: Embedded firmware
Default Config Vulnerable: ⚠️ Yes
Notes: Only affects devices with the specific firmware version; other versions may be unaffected.

⚠️ Manual Verification Required

This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.

Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).

🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.

Recommended Actions:
  1. Review the CVE details at NVD
  2. Check vendor security advisories for your specific version
  3. Test if the vulnerability is exploitable in your environment
  4. Consider updating to the latest version as a precaution

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete device compromise allowing attackers to reset administrative credentials, gain persistent access, and potentially pivot to internal networks.

🟠

Likely Case

Unauthorized password reset leading to temporary device access and configuration changes.

🟢

If Mitigated

Limited impact with proper network segmentation and monitoring detecting unusual password reset attempts.

🌐 Internet-Facing: HIGH - Attack can be launched remotely without authentication, making exposed devices prime targets.
🏢 Internal Only: MEDIUM - Internal attackers could exploit this, but network segmentation reduces exposure.

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
Unauthenticated Exploit: ⚠️ Yes
Complexity: HIGH

Vulnerability database indicates exploitation is difficult and attacks are highly complex, suggesting limited weaponization.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Upgrade to version newer than 2.840.00IB005.0.T

Vendor Advisory: Not provided in references

Restart Required: Yes

Instructions:

1. Check current firmware version. 2. Download latest firmware from Intelbras support portal. 3. Backup device configuration. 4. Apply firmware update via web interface. 5. Reboot device. 6. Restore configuration if needed.

🔧 Temporary Workarounds

Network Access Control

linux

Restrict access to /OutsideCmd endpoint using firewall rules

iptables -A INPUT -p tcp --dport 80 -m string --string "/OutsideCmd" --algo bm -j DROP
iptables -A INPUT -p tcp --dport 443 -m string --string "/OutsideCmd" --algo bm -j DROP

Disable Remote Administration

all

Turn off remote management features if not required

🧯 If You Can't Patch

  • Isolate affected devices in separate VLAN with strict access controls
  • Implement network monitoring for unusual password reset attempts on port 80/443

🔍 How to Verify

Check if Vulnerable:

Check firmware version in device web interface under System > Firmware Information

Check Version:

curl -s http://device-ip/cgi-bin/getSystemInfo | grep FirmwareVersion

Verify Fix Applied:

Confirm firmware version is newer than 2.840.00IB005.0.T and test password recovery functionality

📡 Detection & Monitoring

Log Indicators:

  • Multiple failed password recovery attempts
  • Unusual requests to /OutsideCmd endpoint
  • Successful password resets from unexpected IPs

Network Indicators:

  • HTTP POST requests to /OutsideCmd with password reset parameters
  • Traffic spikes on port 80/443 to affected devices

SIEM Query:

source="firewall.log" AND (url="/OutsideCmd" OR method="POST" AND uri CONTAINS "password")

🔗 References

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