Privilege Escalation via CLI Task Group Mapping in Cisco IOS XRv 9000
CVE-2026-20046 is a privilege-escalation vulnerability in Cisco IOS XR Software affecting IOS XRv 9000 Routers. The flaw is caused by incorrect mapping of a specific CLI command to task groups in the source code. Because the command is mapped improperly, task group-based authorization checks can be bypassed. An authenticated local attacker with a low-privileged account can exploit the issue by invoking the affected CLI command, allowing execution of actions that should require higher privileges. Successful exploitation results in elevation of privileges and full administrative control of the affected device without proper authorization checks.
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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
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Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
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.
Recent activity
12 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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.