CVE-2026-83350: Easily exploitable vulnerability allows unauthenticated attacker with network access via Oracle Net to compromise Oracle Net Services. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Net Services. in Oracle Corporation Oracle Database Server
A vulnerability exists in the Oracle Net Services component of Oracle Database Server affecting versions 21.3 through 21.23 and 23.4.0 through 23.26.3. This flaw allows an unauthenticated attacker with network access to cause a denial of service by hanging or repeatedly crashing Oracle Net Services. The vulnerability has a CVSS 3.1 base score of 7.5, indicating high severity with impact on availability only. Oracle has released security patches addressing this and many other vulnerabilities in their September 2026 Critical Security Patch Update.
AI Analysis
Technical Summary
CVE-2026-83350 is a vulnerability in Oracle Net Services within Oracle Database Server versions 21.3-21.23 and 23.4.0-23.26.3. It allows an unauthenticated attacker with network access via Oracle Net to cause a denial of service by hanging or repeatedly crashing the service. The vulnerability has no impact on confidentiality or integrity but severely impacts availability (CVSS 3.1 vector AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). Oracle has included a fix for this vulnerability in their September 2026 Critical Security Patch Update, which contains 673 security patches across multiple Oracle products.
Potential Impact
Successful exploitation results in a denial of service condition causing Oracle Net Services to hang or crash repeatedly, disrupting availability. There is no impact on confidentiality or integrity. The vulnerability is exploitable remotely without authentication.
Mitigation Recommendations
Oracle has released a security patch for this vulnerability as part of the September 2026 Critical Security Patch Update. Customers are strongly advised to apply the available patches promptly to mitigate this risk. Oracle recommends remaining on actively supported versions and applying security patches without delay. No additional mitigation steps are specified beyond patching.
CVE-2026-83350: Easily exploitable vulnerability allows unauthenticated attacker with network access via Oracle Net to compromise Oracle Net Services. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Net Services. in Oracle Corporation Oracle Database Server
Description
A vulnerability exists in the Oracle Net Services component of Oracle Database Server affecting versions 21.3 through 21.23 and 23.4.0 through 23.26.3. This flaw allows an unauthenticated attacker with network access to cause a denial of service by hanging or repeatedly crashing Oracle Net Services. The vulnerability has a CVSS 3.1 base score of 7.5, indicating high severity with impact on availability only. Oracle has released security patches addressing this and many other vulnerabilities in their September 2026 Critical Security Patch Update.
CVSS v3.1
Score 7.5high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-83350 is a vulnerability in Oracle Net Services within Oracle Database Server versions 21.3-21.23 and 23.4.0-23.26.3. It allows an unauthenticated attacker with network access via Oracle Net to cause a denial of service by hanging or repeatedly crashing the service. The vulnerability has no impact on confidentiality or integrity but severely impacts availability (CVSS 3.1 vector AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). Oracle has included a fix for this vulnerability in their September 2026 Critical Security Patch Update, which contains 673 security patches across multiple Oracle products.
Potential Impact
Successful exploitation results in a denial of service condition causing Oracle Net Services to hang or crash repeatedly, disrupting availability. There is no impact on confidentiality or integrity. The vulnerability is exploitable remotely without authentication.
Mitigation Recommendations
Oracle has released a security patch for this vulnerability as part of the September 2026 Critical Security Patch Update. Customers are strongly advised to apply the available patches promptly to mitigate this risk. Oracle recommends remaining on actively supported versions and applying security patches without delay. No additional mitigation steps are specified beyond patching.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-7r5w-6grx-f5xp
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-83350"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aaa07dc55bf5e2cf5ea3291
Added to database: 09/16/2026, 03:07:08 UTC
Last enriched: 09/16/2026, 03:54:38 UTC
Last updated: 09/16/2026, 06:01:23 UTC
Views: 1
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.