Security readout for executives and security teams
Plain-English summary
CVE-2021-2007 is a low-severity Oracle MySQL Client C API flaw. A network-accessible unauthenticated attacker could, under difficult conditions, read limited data available to the affected client. Sources do not show active exploitation. Treat it as routine patch hygiene, especially on systems using older MySQL client libraries.
Executive priority
Low urgency unless affected clients handle sensitive data or run in regulated environments. Fold remediation into normal patch cycles, but do not ignore stale MySQL client libraries because the flaw permits limited unauthorized data reads.
Technical view
The issue affects Oracle MySQL Client C API in versions 5.6.47 and prior, 5.7.29 and prior, and 8.0.19 and prior. CVSS is 3.7: network attack vector, high complexity, no privileges, no user interaction, unchanged scope, and limited confidentiality impact only.
Likely exposure
Exposure is most likely where applications, admin tools, or packaged software rely on vulnerable MySQL client libraries. Because the impacted side is the client, validate installed client packages and dependencies, then check downstream vendor advisories for product-specific applicability.
Exploitation context
Oracle describes exploitation as difficult and requiring network access via multiple protocols. The supplied sources do not cite active exploitation, KEV listing, exploit availability, integrity impact, or availability impact. The expected impact is limited unauthorized read access to a subset of client-accessible data.
Researcher notes
Evidence is limited to advisory-level detail. No CWE, root cause, exploit technique, or concrete fixed version beyond vendor update guidance is provided in the source bundle. Avoid assuming server-side exposure; validate the client library actually used by applications.
Mitigation direction
- Apply Oracle MySQL updates from the January 2021 Critical Patch Update or later.
- Update OS-packaged MySQL client libraries through the appropriate distribution channel.
- Check Fedora, Gentoo, and NetApp advisories for package-specific guidance.
- Prioritize systems using affected client libraries in sensitive data workflows.
Validation and detection
- Inventory MySQL client and libmysqlclient versions across servers, containers, and build images.
- Confirm no deployed clients are 5.6.47, 5.7.29, 8.0.19, or earlier.
- Review application dependency manifests for bundled MySQL client libraries.
- Check vendor advisories for downstream product exposure and fixed package versions.
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-2021-2007 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
- 3.7 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
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:H/PR:N/UI:N/S:U/C:L/I:N/A:N2.21.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
3.7LowVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.oracle.com/security-alerts/cpujan2021.htmlCVE reference · x_refsource_MISC
- FEDORA-2021-db50ab62d3CVE reference · vendor-advisory, x_refsource_FEDORA
- FEDORA-2021-b1d1655cefCVE reference · vendor-advisory, x_refsource_FEDORA
- GLSA-202105-27CVE reference · vendor-advisory, x_refsource_GENTOO
- https://security.netapp.com/advisory/ntap-20210622-0001/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.