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CVE-2026-47040 is a vulnerability in the Oracle Net Services component of Oracle Database Server, specifically affecting Connection Manager. Supported affected versions are 19.3 through 19.31, 21.3 through 21.22, and 23.4.0 through 23.26.2. The flaw is remotely exploitable over Oracle Net by an unauthenticated attacker and requires no user interaction. Successful exploitation can compromise Oracle Net Services and lead to unauthorized access to sensitive data handled by accessible Oracle Net Services instances. The available information indicates high confidentiality and availability impact, but does not provide sufficient technical detail about the root cause or vulnerable function to assign a precise weakness class beyond the vendor description.
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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.
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A remotely exploitable unauthenticated vulnerability affecting Connection Manager in Oracle Net Services within Oracle Database Server.
A critical Oracle Database Server vulnerability affecting Connection Manager in Oracle Net Services that is remotely exploitable without authentication.
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.