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CVE-2025-20293 is an access control bypass vulnerability in the Day One setup process of Cisco IOS XE Software for Catalyst 9800 Series Wireless Controllers for Cloud (9800-CL). The flaw is caused by incomplete cleanup after the Day One setup process finishes, leaving the device's PKI server reachable when it should no longer be exposed in that manner. An unauthenticated remote attacker can exploit the issue by sending Simple Certificate Enrollment Protocol (SCEP) requests to an affected device. Successful exploitation allows the attacker to obtain a certificate from the virtual wireless controller and use that certificate to enroll an attacker-controlled device with the controller.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An access control bypass vulnerability affecting certificate services on certain Cisco IOS XE devices.
An access control bypass vulnerability affecting certificate services on certain Cisco IOS XE devices.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.