Security readout for executives and security teams
Plain-English summary
This flaw can let an unauthenticated network attacker crash or hang affected MySQL Server deployments on Windows. The business impact is service outage, not data theft or data modification based on the supplied CVSS details. Systems running MySQL Server 8.0.25 or earlier should be treated as high priority if reachable by untrusted networks.
Executive priority
Treat as high priority for availability-sensitive services. It does not indicate data compromise in the supplied evidence, but an unauthenticated attacker could disrupt affected databases. Patch reachable Windows MySQL servers promptly and verify network restrictions around database access.
Technical view
CVE-2021-35583 affects Oracle MySQL Server, component Server: Windows, in supported versions 8.0.25 and prior. It is network-exploitable with low complexity, no privileges, and no user interaction. Successful exploitation can cause a complete denial of service through a hang or frequently repeatable crash. CVSS 3.1 score is 7.5, availability impact only.
Likely exposure
Exposure is most likely where MySQL Server 8.0.25 or earlier runs on Windows and accepts network connections. Risk is higher for internet-facing, partner-facing, or broadly reachable database services. NetApp published an advisory, so organizations using NetApp-managed or bundled MySQL-related components should check vendor applicability.
Exploitation context
The supplied sources do not show CISA KEV listing or confirmed active exploitation. The vulnerability is described as easily exploitable over the network and unauthenticated, so defensive urgency comes from outage potential and ease of reachability, not confirmed exploitation evidence.
Researcher notes
The public description is limited to product, component, version range, CVSS, and denial-of-service impact. No CWE, root-cause detail, proof-of-concept, or exploit-in-the-wild evidence is provided in the source bundle. Avoid assuming Linux impact or confidentiality/integrity compromise.
Mitigation direction
- Apply Oracle's October 2021 CPU or later vendor-approved MySQL Server security update.
- Upgrade affected MySQL Server instances beyond 8.0.25 following Oracle guidance.
- Restrict MySQL network access to trusted application hosts and administration networks.
- Review NetApp advisory if NetApp products manage or bundle affected MySQL components.
- Prioritize externally reachable Windows MySQL servers before isolated internal instances.
Validation and detection
- Inventory MySQL Server deployments and identify Windows hosts running 8.0.25 or earlier.
- Confirm current patch level against Oracle's October 2021 CPU guidance.
- Check whether MySQL is exposed to untrusted networks or broad internal segments.
- Review database logs for unexplained hangs, crashes, or repeated service restarts.
- For NetApp environments, compare deployed products against the NetApp advisory.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2021-35583 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.oracle.com/security-alerts/cpuoct2021.htmlCVE reference · x_refsource_MISC
- https://security.netapp.com/advisory/ntap-20211022-0003/CVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.