Command Injection in Cisco IOS XE HTTP API Subsystem
CVE-2025-20334 is a command injection vulnerability in the HTTP API subsystem of Cisco IOS XE Software. The flaw is caused by insufficient input validation of user-supplied data processed by certain HTTP API requests. An attacker can submit crafted input that is interpreted as operating system commands by the underlying platform. According to the provided content, successful exploitation results in command execution on the device’s underlying operating system with root privileges. Exploitation is possible either by an authenticated attacker with administrative privileges who sends a crafted API call to an affected device, or by an unauthenticated attacker who induces a currently logged-in administrator to click a crafted link, leveraging the administrator’s active session.
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
If you can’t patch tonight, do this now.
Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Recent activity
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability in Cisco IOS XE device management interfaces that may allow remote arbitrary code execution.
A vulnerability in Cisco IOS XE management interfaces that may allow remote arbitrary code execution.
A command injection vulnerability in the HTTP API subsystem of Cisco IOS XE Software that can allow arbitrary system command execution with root privileges via crafted API input.
The version that knows your environment.
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.