Cisco’s Zero-Day Drama: Another IOS Flaw Unleashed, Patch or Perish!
Cisco’s IOS is once again the belle of the vulnerability ball, thanks to a new zero-day flaw, CVE-2025-20352. Attackers are using it to crash devices or run code as root. The only dance move here is to patch, while Cisco suggests limiting SNMP access as a temporary tango.
Hot Take:
Once again, Cisco’s networking empire is on shaky ground thanks to its favorite foe: zero-day exploits. It’s like a never-ending game of whack-a-mole, except the moles are hackers, and the mallet is a patch that always seems to arrive just a tad too late. This time, the attackers have found a new soft spot in the SNMP subsystem, and it’s causing quite the ruckus. As if routers and switches didn’t have enough on their plates, now they have to worry about malicious packets and rogue admins. Talk about a bad hair day for Cisco!
Key Points:
- Cisco has identified a new zero-day vulnerability, tracked as CVE-2025-20352, in its IOS and IOS XE software.
- The flaw is located in the SNMP subsystem and can be exploited via IPv4 or IPv6 whenever SNMP is enabled.
- Low-privilege attackers can crash devices, while high-privilege attackers can run arbitrary code as root.
- Cisco urges customers to upgrade to a fixed software release to mitigate the vulnerability.
- No temporary workarounds exist, but restricting SNMP access to trusted hosts might buy some time.