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CVE-2026-20272 is a critical vulnerability group in Cisco IOS XE Software arising from improper neutralization of special elements (CWE-74). The group covers command, operating-system, or argument injection conditions identified during an internal security review and remediated through IOS XE software-hardening releases. It affects IOS XE deployments operating in autonomous or controller mode.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
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.
22 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical Cisco IOS XE command/OS/argument injection vulnerability with CVSS 9.8, identified through Cisco internal security testing.
A critical vulnerability in Cisco IOS XE that could allow attackers to bypass authentication and execute arbitrary commands.
A critical command injection vulnerability affecting Cisco IOS XE Software.
A critical command/OS/argument-injection vulnerability group affecting Cisco IOS XE, referenced as part of Cisco's August advisory batch.
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.