Cisco Catalyst SD-WAN Manager Sensitive Information Disclosure
CVE-2026-20133 is an information disclosure vulnerability in Cisco Catalyst SD-WAN Manager (formerly vManage). According to the provided content, the flaw is caused by insufficient file system access restrictions. Cisco states that an attacker can exploit the issue by accessing the API of an affected system, which can expose sensitive information from the underlying operating system. Multiple supporting references in the content characterize the issue as allowing remote, unauthenticated access to sensitive OS-level files on affected SD-WAN Manager deployments.
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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.
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
57 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An information disclosure vulnerability in Cisco Catalyst SD-WAN Manager that Cisco patched in February and CISA later flagged as actively exploited.
An information disclosure vulnerability affecting Cisco Catalyst SD-WAN Manager, observed in active network exploitation attempts.
An information disclosure vulnerability affecting Cisco SD-WAN that CISA added to the KEV catalog; the content highlights its significance because it was reportedly part of an active nation-state exploit chain despite a moderate CVSS score.
One of three vulnerabilities in unpatched Cisco Catalyst SD-WAN Infrastructure that were chained together in widespread in-the-wild active exploitation.
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.