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Net-SNMP Vulnerability Enables Buffer Overflow and the Daemon to Crash

## Cybersecurity: Net-SNMP Vulnerability Disclosure

ABy Anthony ReidDec 25, 20251 min read

Cybersecurity: Net-SNMP Vulnerability Disclosure

A critical vulnerability has been identified in the Net-SNMP software suite, posing significant risks to network infrastructure globally.

Designated as CVE-2025-68615, this vulnerability allows remote attackers to induce a buffer overflow, leading to a potential service crash or severe system compromise.

The flaw is located in the snmptrapd daemon, responsible for receiving and processing SNMP trap messages.

Net-SNMP is a commonly used protocol for monitoring network devices, including routers, switches, and servers. The vulnerability's scope is extensive due to its widespread deployment in enterprise environments. The issue arises from improper handling of incoming packets.

Exploitation involves a threat actor sending a "specially crafted packet" to a vulnerable snmptrapd instance, triggering a buffer overflow when the daemon processes the malformed data.

A critical vulnerability has been identified in the Net-SNMP software suite, posing significant risks to network infrastructure globally.
Anthony Reid · Thehackingpost

The vulnerability has been assigned a CVSS score of 9.8, indicating a critical level of severity, with significant impacts on confidentiality, integrity, and availability. A buffer overflow with such ratings suggests the possibility of remote code execution (RCE).

The vulnerability was discovered by a researcher in collaboration with the Trend Micro Zero Day Initiative.

Net-SNMP maintainers have released patches to address the flaw. Administrators are advised to upgrade to version 5.9.5 or 5.10.pre2 immediately.

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For organizations unable to apply patches immediately, network segmentation is recommended. SNMP ports should remain inaccessible from the public internet, and firewalls should be configured to block external access to the snmptrapd port to mitigate the risk of remote exploitation.

Further details can be found in the advisory .

Based on reporting by Cyber Security News.

AI transparency. This article was produced with the assistance of artificial intelligence and published under human editorial oversight. AI systems can make mistakes. Read how we use AI (EU AI Act, Art. 50).
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