Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessObtain local logon on connector host
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ExploitStage malicious input requiring victim interaction
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ImpactTrigger fault causing partial DoS of connector
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Access control enforcement
MITRE ATT&CK
1 technique across 1 tactic: Defense Evasion The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Exploitation Conditions | Exploitation requires the attacker to already possess a logon to the infrastructure/host where MySQL Connector/ODBC 26.7.1 executes (AV:L), and success additionally depends on interaction from a different human victim (UI:R) plus specialized conditions reflected by high attack complexity (AC:H). These limiting factors - local presence, a separate interacting victim, and difficult-to-arrange preconditions - make realistic exploitation narrow despite PR:N, and the impact is capped at a partial denial of service of the connector with no data confidentiality or integrity effect. |
| Impact | This is a low-priority, low-severity issue. The Oracle-assigned CVSS 3.1 base score is 2.5 with vector AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L, meaning local access to the host, high attack complexity, user interaction, and only a partial availability (DoS) impact with no confidentiality or integrity effect. Although PR:N indicates no privileges are required, the attacker must already have a logon to the infrastructure where MySQL Connectors runs (AV:L), which sharply limits reach. No EPSS score, CISA KEV listing, or public POC is present in the provided data, so there is no public exploit identified at time of analysis and no evidence of active exploitation. All signals are consistent and point the same direction - a minor, hard-to-exploit local DoS, not a widespread threat. The only mild tension is PR:N combined with AV:L and 'unauthenticated attacker with logon,' which reflects Oracle's convention that a logged-on but unprivileged user needs no application-level authentication; this is not a conflict but is worth noting. No key signals are missing beyond the CWE, which is listed as N/A. |
| Exploit ScenarioDerived | A local, logged-on user on a host where MySQL Connector/ODBC is installed crafts conditions (e.g., a malicious input or resource) that, when another user interacts with the connector, triggers a fault causing a partial denial of service of the connector. The high complexity and need for interaction from a separate victim make the scenario opportunistic rather than reliable. No public exploit code is identified at time of analysis. |
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Alert meAnalysisAIv1 – Oct 21, 2026
Partial denial of service in Oracle MySQL Connector/ODBC 26.7.1 is reachable only by an attacker who already holds a logon on the same infrastructure where the driver runs, and only when a separate user is induced to interact with the affected component; high attack complexity means the precondition state is hard to arrange reliably. Successful exploitation yields nothing beyond a partial availability impact on the connector itself - no confidentiality or integrity effect - which is why Oracle scored it CVSS 3.1 base 2.5. No public exploit code and no confirmed active exploitation (CISA KEV) were identified at time of analysis, and EPSS-style risk is correspondingly low.
RemediationAI
The provided intelligence does not confirm a specific fixed version, so patch availability should be treated as unconfirmed until verified against the Oracle Critical Patch Update for October 2026 (https://www.oracle.com/security-alerts/cpuoct2026.html), which is the vendor advisory for this CVE; upgrade MySQL Connector/ODBC to the version that advisory names for the Connector/ODBC component and re-check applications that bundle the driver privately. Where upgrade timing is constrained, the practical compensating controls follow directly from the assessed vector: since exploitation requires an existing host logon (AV:L), restrict interactive and service-account access to machines and containers running the connector and remove shared or generic credentials - trade-off is added operational friction for support and batch jobs; since success requires a separate user to interact (UI:R), avoid processing untrusted DSN/connection configuration or imported data through applications using the driver and load DSNs from administrator-controlled locations only - trade-off is reduced flexibility for self-service connection setup; and run connector-hosted applications under least-privileged accounts with restart-on-failure supervision so a partial denial of service degrades a single process rather than a shared service - trade-off is the need for process supervision and restart policies. Monitor the vendor advisory for a fixed connector build before relaxing these controls.
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in euvd
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
The issue lives in the ODBC driver layer of Oracle MySQL Connectors, the client-side library that lets ODBC-compliant applications (BI tools, spreadsheets, ETL jobs, reporting stacks) open sessions to MySQL Server. Oracle does not disclose a CWE class for this advisory, so the root cause is only characterized through the CVSS vector: AV:L places the attacker on the host or infrastructure executing the connector rather than on the network path, AC:H reflects preconditions that are difficult to arrange, UI:R requires a person other than the attacker to perform an action, PR:N indicates no privileges are needed once host logon exists, and the sole impact is A:L. The high attack complexity combined with the necessity of a second interacting victim means the practical attack surface is a narrow local scenario - for example, manipulating connection/DSN configuration or data handled by the driver so that a subsequent user-triggered operation degrades the connector process - rather than a remotely reachable memory-corruption primitive. Because the connector is often embedded in third-party desktop and server applications, the blast radius is limited to the client process using the driver, not the MySQL Server instance itself.
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Severity by source
AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L
Local logon required so AV:L; difficult preconditions give AC:H; no app auth so PR:N; a separate victim must interact (UI:R); only partial availability loss (A:L).
Primary rating from Vendor (oracle).
CVSS VectorVendor: oracle
DescriptionCVE.org
Vulnerability in the MySQL Connectors product of Oracle MySQL (component: Connector/ODBC). The supported version that is affected is 26.7.1. Difficult to exploit vulnerability allows unauthenticated attacker with logon to the infrastructure where MySQL Connectors executes to compromise MySQL Connectors. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of MySQL Connectors. CVSS 3.1 Base Score 2.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L).
Threat Intelligence Overview
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.
Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.
Oracle MySQL through 5.5.52, 5.6.x through 5.6.33, and 5.7.x through 5.7.15; MariaDB before 5.5.51, 10.0.x before 10.0.2
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EUVD-2026-106205
GHSA-4r6f-vhqr-72fj
NVD
CVE.org
EPSS
Exploit-DB