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CVE-2026-20358 groups multiple external file-system control weaknesses in Cisco Crosswork under CWE-73. These weaknesses allow an outside actor to influence which files the software reads or writes. Affected products include Crosswork Data Gateway, Network Controller, and Planning releases 7.2.1 and earlier, regardless of configuration. Cisco identified the weaknesses during an internal security review and addressed them in a software hardening release. The specific vulnerable functions and exploitation mechanisms are not publicly detailed in the available information.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
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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.
9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A CVSS 10.0 external file control vulnerability in Cisco Crosswork. Externally influenced filenames or paths may permit unsafe file operations; the content does not establish a specific exploitation outcome.
A maximum-severity external control of file system vulnerability affecting Cisco Crosswork Data Gateway, Crosswork Network Controller, and Crosswork Planning.
A critical external control of file system vulnerability affecting Cisco Crosswork Data Gateway, Crosswork Network Controller, and Crosswork Planning.
A critical Cisco Crosswork vulnerability grouping multiple issues; one of the flaws fixed in Crosswork 7.2.1-SP that could enable severe impacts such as remote code execution, authentication bypass, path traversal, or file overwrite/deletion.
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.