CVE-2025-20315 is a denial-of-service vulnerability in the Network-Based Application Recognition (NBAR) feature of Cisco IOS XE Software. The flaw is caused by improper handling of malformed Control and Provisioning of Wireless Access Points (CAPWAP) packets processed through an affected device. A remote, unauthenticated attacker can trigger the issue by sending crafted malformed CAPWAP traffic through the vulnerable system, causing the device to reload unexpectedly. The vulnerability affects packet-processing logic in the NBAR feature and results in service interruption rather than code execution.
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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.
A remote denial-of-service vulnerability in the application recognition function of Cisco IOS XE devices.
A remote denial-of-service vulnerability in the application recognition function of 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.