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CVE-2026-83333 is an easily exploitable vulnerability in the Oracle Net Services component of Oracle Database Server versions 23.4.0 through 23.26.3. An unauthenticated attacker able to reach Oracle Net can trigger a condition causing Oracle Net Services to hang or crash repeatedly, resulting in a complete denial of service. The issue is rated CVSS 3.1 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
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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.
5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability in Oracle Database Server referenced by the September 15, 2026 patch publication.
An unauthenticated network-accessible denial-of-service vulnerability in Oracle Net Services, a component of Oracle Database Server. It affects supported versions 23.4.0 through 23.26.3 and can be exploited via Oracle Net to cause a hang or repeatable complete crash of the service.
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.