CVE-2025-41223
📋 TL;DR
This vulnerability affects multiple RUGGEDCOM industrial networking devices that support the TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 cipher suite. The CBC mode in this cipher suite is vulnerable to timing attacks, potentially allowing attackers to decrypt encrypted communications and compromise data integrity and confidentiality. All listed RUGGEDCOM devices are affected unless specifically patched.
💻 Affected Systems
- RUGGEDCOM i800
- RUGGEDCOM i801
- RUGGEDCOM i802
- RUGGEDCOM i803
- RUGGEDCOM M2100
- RUGGEDCOM M2200
- RUGGEDCOM M969
- RUGGEDCOM RMC30
- RUGGEDCOM RMC8388
- RUGGEDCOM RP110
- RUGGEDCOM RS1600
- RUGGEDCOM RS1600F
- RUGGEDCOM RS1600T
- RUGGEDCOM RS400
- RUGGEDCOM RS401
- RUGGEDCOM RS416
- RUGGEDCOM RS416P
- RUGGEDCOM RS416Pv2
- RUGGEDCOM RS416v2
- RUGGEDCOM RS8000
- RUGGEDCOM RS8000A
- RUGGEDCOM RS8000H
- RUGGEDCOM RS8000T
- RUGGEDCOM RS900
- RUGGEDCOM RS900G
- RUGGEDCOM RS900GP
- RUGGEDCOM RS900L
- RUGGEDCOM RS900M-GETS-C01
- RUGGEDCOM RS900M-GETS-XX
- RUGGEDCOM RS900M-STND-C01
- RUGGEDCOM RS900M-STND-XX
- RUGGEDCOM RS900W
- RUGGEDCOM RS910
- RUGGEDCOM RS910L
- RUGGEDCOM RS910W
- RUGGEDCOM RS920L
- RUGGEDCOM RS920W
- RUGGEDCOM RS930L
- RUGGEDCOM RS930W
- RUGGEDCOM RS940G
- RUGGEDCOM RS969
- RUGGEDCOM RSG2100
- RUGGEDCOM RSG2100P
- RUGGEDCOM RSG2200
- RUGGEDCOM RSG2288
- RUGGEDCOM RSG2300
- RUGGEDCOM RSG2300P
- RUGGEDCOM RSG2488
- RUGGEDCOM RSG907R
- RUGGEDCOM RSG908C
- RUGGEDCOM RSG909R
- RUGGEDCOM RSG910C
- RUGGEDCOM RSG920P
- RUGGEDCOM RSL910
- RUGGEDCOM RST2228
- RUGGEDCOM RST2228P
- RUGGEDCOM RST916C
- RUGGEDCOM RST916P
⚠️ 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.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Attackers could decrypt sensitive industrial control system communications, potentially gaining access to operational technology networks, manipulating industrial processes, or stealing proprietary data.
Likely Case
Skilled attackers could intercept and decrypt encrypted traffic between devices, potentially gaining unauthorized access to network segments or sensitive operational data.
If Mitigated
With proper network segmentation and monitoring, impact would be limited to potential data exposure from intercepted communications.
🎯 Exploit Status
Exploitation requires network access and ability to intercept TLS traffic. Timing attacks against CBC mode are well-documented but require specific conditions.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: V5.10.0 or later for affected V5.X products
Vendor Advisory: https://cert-portal.siemens.com/productcert/html/ssa-083019.html
Restart Required: Yes
Instructions:
1. Check current firmware version. 2. Download V5.10.0 or later from Siemens support portal. 3. Backup device configuration. 4. Apply firmware update following vendor documentation. 5. Verify update and restore configuration if needed.
🔧 Temporary Workarounds
Disable vulnerable cipher suite
allRemove TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 from enabled cipher suites
Consult device-specific configuration guide for cipher suite management
Network segmentation
allIsolate affected devices in separate network segments with strict access controls
🧯 If You Can't Patch
- Implement strict network segmentation to limit exposure
- Deploy network monitoring and intrusion detection for TLS traffic anomalies
🔍 How to Verify
Check if Vulnerable:
Check device firmware version and verify if TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 cipher suite is enabledCheck Version:
Device-specific CLI command (varies by product) - typically 'show version' or similarVerify Fix Applied:
Verify firmware version is V5.10.0 or later and vulnerable cipher suite is disabled📡 Detection & Monitoring
Log Indicators:
- Unusual TLS handshake failures
- Multiple connection attempts with different cipher suites
Network Indicators:
- Unusual network traffic patterns targeting TLS ports
- Attempts to force specific cipher suites
SIEM Query:
tls.cipher_suite:"TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256" AND dest_ip:[affected_device_ips]