Critical SNMP Vulnerability in Cisco IOS/IOS XE

What this episode covers

In this episode of IT SPARC Cast – CVE of the Week, John and Lou break down CVE-2025-20352, a serious SNMP vulnerability impacting Cisco’s IOS and IOS XE software. Rated CVSS 7.7, this flaw allows attackers with read-only SNMP credentials to crash your system—and with admin credentials, it can escalate to full remote code execution as root. That’s right—root.We explain why this threat is more dangerous than the score suggests, how it fits into broader supply-chain and chain-attack patterns, and why outdated or unsupported infrastructure makes this even worse. The team also shares mitigation tips and why you might need to shut off SNMP entirely if you’re running legacy gear.If you’re managing Cisco infrastructure, especially with SNMPv2c or earlier, this episode is a must-listen. Don’t wait for this to be part of a multi-vector attack—lock it down now.⸻IT SPARC Cast@ITSPARCCast on Xhttps://www.linkedin.com/company/sparc-sales/ on LinkedInJohn Barger@john_Video on Xhttps://www.linkedin.com/in/johnbarger/ on LinkedInLou Schmidt@loudoggeek on Xhttps://www.linkedin.com/in/louis-schmidt-b102446/ on LinkedIn Hosted on Acast. See acast.com/privacy for more information.

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How long is this episode of IT SPARC Cast?

This episode is 8 minutes long.

When was this IT SPARC Cast episode published?

This episode was published on September 26, 2025.

What is this episode about?

In this episode of IT SPARC Cast – CVE of the Week, John and Lou break down CVE-2025-20352, a serious SNMP vulnerability impacting Cisco’s IOS and IOS XE software. Rated CVSS 7.7, this flaw allows attackers with read-only SNMP credentials to crash...

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