CVE-2015-2881 – This CVE exposes hardcoded backdoor credentials... (How to Fix)

Q: What is the severity of CVE-2015-2881?

CVE-2015-2881 has a CVSS score of 9.8 (CRITICAL). This CVE exposes hardcoded backdoor credentials (guest/guest and admin/12345) in Gynoii video baby monitors, allowing unauthorized access to device functions. Anyone using affected Gynoii baby monitors is vulnerable to attackers who can reach these devices on the network.

📋 TL;DR

This CVE exposes hardcoded backdoor credentials (guest/guest and admin/12345) in Gynoii video baby monitors, allowing unauthorized access to device functions. Anyone using affected Gynoii baby monitors is vulnerable to attackers who can reach these devices on the network.

💻 Affected Systems

Products:

Gynoii video baby monitors

Versions: All versions prior to firmware updates addressing this issue

Operating Systems: Embedded Linux/RTOS in baby monitors

Default Config Vulnerable: ⚠️ Yes

Notes: Affects devices with default configuration; any device where these credentials haven't been changed remains vulnerable.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete device takeover enabling video/audio surveillance, device manipulation, and potential pivot to internal networks.

🟠

Likely Case

Unauthorized access to live video feeds, audio monitoring, and device settings modification.

🟢

If Mitigated

No impact if devices are properly segmented and credentials are changed.

🌐 Internet-Facing: HIGH - Devices exposed to internet are trivially exploitable with default credentials.

🏢 Internal Only: HIGH - Internal attackers or malware can easily exploit these credentials.

🎯 Exploit Status

Public PoC: ⚠️ Yes

Weaponized: CONFIRMED

Unauthenticated Exploit: ⚠️ Yes

Complexity: LOW

Simple credential-based attack requiring only network access to device.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Unknown - check with vendor for firmware updates

Vendor Advisory: Not available in provided references

Restart Required: Yes

Instructions:

1. Contact Gynoii for firmware updates. 2. Apply firmware update if available. 3. Reboot device after update.

🔧 Temporary Workarounds

Change Default Credentials

all

Manually change guest and admin passwords to strong, unique values

Use device web interface or admin panel to change passwords

Network Segmentation

all

Isolate baby monitors on separate VLAN or network segment

Configure network switch/firewall to restrict monitor network access

🧯 If You Can't Patch

Disconnect devices from internet and place behind firewall with strict inbound rules
Implement network monitoring for authentication attempts to these devices

🔍 How to Verify

Check if Vulnerable:

Attempt to authenticate to device web interface using guest/guest or admin/12345 credentials

Check Version:

Check device web interface or contact vendor for firmware version information

Verify Fix Applied:

Verify new credentials work and old credentials fail authentication

📡 Detection & Monitoring

Log Indicators:

Failed authentication attempts, successful logins with default credentials

Network Indicators:

HTTP/HTTPS traffic to baby monitor ports with default credential patterns

SIEM Query:

source="baby_monitor" AND (user="guest" OR user="admin")

📊 Metadata

CVE ID: CVE-2015-2881

CVSS v3 Score: 9.8 (CRITICAL)

CVSS Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE: CWE-798

Published: April 10, 2017

Last Updated: April 20, 2025

🔗 References

https://community.rapid7.com/community/infosec/blog/2015/09/02/iotsec-disclosure-10-new-vulns-for-several-video-baby-monitors Exploit,Mitigation,Third Party Advisory
https://community.rapid7.com/community/infosec/blog/2015/09/02/iotsec-disclosure-10-new-vulns-for-several-video-baby-monitors Exploit,Mitigation,Third Party Advisory

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🔗 Related Vulnerabilities

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