Loading vulnerability…
CVE-2026-20269 is a high-severity vulnerability record for Cisco IOS XE Software that covers multiple internally discovered flaws addressed through software hardening releases. The issues are grouped as improper control of a resource through its lifetime and map to CWE-664. Reported manifestations include invalid memory handling, null pointer dereferences, file handler issues, and associated memory corruption conditions. The vulnerability affects Cisco IOS XE Software running in autonomous mode or controller mode across reviewed release trains. Cisco characterizes the issue as remotely exploitable and assigns CVSS v3.1 8.6 with vector AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.
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.
10 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An improper control of a resource through its lifetime vulnerability affecting Cisco IOS XE Software.
A Cisco IOS XE Software vulnerability involving improper control of a resource through its lifetime.
A Cisco IOS XE Software vulnerability involving improper control of a resource through its lifetime.
An improper control of a resource through its lifetime vulnerability in Cisco IOS XE Software.
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.