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How the mentioned CVE works:
CVE-2025-61610 exploits improper input validation in the nr modem software stack. The modem fails to validate incoming NR protocol messages, such as RRC signaling packets. Attackers craft malicious packets with invalid parameters or oversized payloads. This includes malformed information elements or incorrect sequence numbers. The modem processes these without sanity checks, leading to buffer overflows. Memory corruption occurs when copying data into fixed-size buffers. Integer overflows may happen during size calculations. This triggers unhandled exceptions or access violations. The firmware crashes due to division by zero or null pointer dereference. The system reboot is forced, causing denial of service. Remote exploitation is via over-the-air malicious packets. No authentication or user interaction is required. Base station spoofing or compromised UE can send packets. The crash disrupts network connectivity entirely. Persistent until manual reset in severe cases. This highlights insufficient input sanitization in telecom code. The vulnerability affects modem availability and reliability. It can be triggered repeatedly for sustained DoS. Firmware recovery may require physical intervention. Overall, it’s a critical remote system flaw.
Platform: nr modem
Version: Unknown
Vulnerability: Improper input validation
Severity: Critical
date: 12/01/2025
Prediction: Patch expected December
What Undercode Say:
Analytics:
dmesg | grep modem
journalctl -u modem
cat /proc/modem/state
strings modem.bin | grep validate
modemctl status
logread -e crash
mmcli -L
at+cgmm?
strace -p modem_pid
hexdump modem_log.bin
how Exploit:
Craft malicious NR packets.
Send via radio interface.
Target modem protocol handlers.
Exploit buffer overflow.
Trigger system crash.
Repeat for DoS.
Protection from this CVE
Apply vendor patches.
Enable input validation.
Use firewall rules.
Monitor modem logs.
Isolate network access.
Update firmware regularly.
Impact:
Remote denial of service.
Network connectivity loss.
System instability required.
No privilege escalation.
Potential device reboot.
Service disruption critical.
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Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
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