Security readout for executives and security teams
Plain-English summary
CVE-2021-35633 is a low-severity MySQL Server logging vulnerability. A highly privileged attacker who can reach MySQL Server over the network could cause a partial denial of service. The issue affects supported MySQL Server versions 8.0.26 and earlier.
Executive priority
Treat as routine patch management unless the organization has many older MySQL instances or broad privileged network access. Business urgency is low because impact is partial availability loss and attacker prerequisites are high.
Technical view
Oracle describes this as a Server: Logging flaw in MySQL Server with CVSS 3.1 score 2.7. The vector is AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L, meaning network reachable, easy to trigger, but requiring high privileges and affecting availability only.
Likely exposure
Exposure is limited to Oracle MySQL Server 8.0.26 and prior where highly privileged users have network access through supported MySQL protocols.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation evidence. Attack impact is partial denial of service, not data theft or privilege escalation, and requires high privileges.
Researcher notes
The public description is narrow and does not provide CWE, root cause detail, exploit method, or fixed-version text. Avoid assuming broader Oracle or NetApp product exposure beyond cited advisory applicability.
Mitigation direction
- Identify MySQL Server instances running 8.0.26 or earlier.
- Review Oracle October 2021 CPU guidance for applicable MySQL updates.
- Check NetApp advisory applicability for environments using NetApp products.
- Limit network access to MySQL administrative interfaces.
- Review privileged database account access and remove unnecessary privileges.
Validation and detection
- Inventory MySQL Server versions across production and support systems.
- Confirm whether exposed instances are 8.0.26 or earlier.
- Map which high-privileged accounts can connect over the network.
- Check vendor advisories for the exact remediation path.
- Track remediation through normal patch management evidence.
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-2021-35633 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
- Low
- CVSS
- 2.7 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L
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:H/UI:N/S:U/C:N/I:N/A:L1.21.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
2.7LowVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L
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.