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CVE-2026-20133 is an information disclosure vulnerability in Cisco Catalyst SD-WAN Manager caused by insufficient file system access restrictions. The flaw allows access to sensitive information stored on the underlying operating system that should not be exposed through the affected management environment. Available reporting indicates the issue can be reached through the API, and Cisco’s description further states that an attacker with netadmin privileges who can access the vshell of an affected system can read sensitive OS-level information. Public reporting also indicates the exposed data may include highly sensitive administrative material such as the private key associated with the vmanage-admin account, which could materially expand post-compromise options.
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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.
73 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Уязвимость раскрытия чувствительной информации в Cisco SD-WAN Manager, позволяющая аутентифицированному пользователю netadmin читать чувствительные данные ОС и извлекать закрытый ключ vmanage-admin.
A Cisco SD-WAN vulnerability mentioned as one of several other vulnerabilities discovered this year.
A Cisco SD-WAN vulnerability listed by the article as having detected exploitation in 2026.
A previously flagged actively exploited Cisco SD-WAN vulnerability referenced for context only.
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.