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CVE Record

CVE-2021-35622: Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Security: Encryption).

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Security: Encryption). Supported versions that are affected are 8.0.26 and prior. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

MediumCVSS 4.9Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2021-35622 is a denial-of-service issue in Oracle MySQL Server. A high-privileged user with network access can make affected MySQL instances hang or crash repeatedly. It does not indicate data theft or data modification, but it can disrupt applications that depend on MySQL availability.

Executive priority

Treat this as a service availability risk, not a data breach risk based on current sources. Prioritize remediation for business-critical MySQL systems and environments with broad privileged network access.

Technical view

The vulnerability affects Oracle MySQL Server 8.0.26 and prior, in the Server: Security: Encryption component. CVSS 3.1 is 4.9: network reachable, low complexity, high privileges required, no user interaction, availability impact only.

Likely exposure

Exposure is most relevant where MySQL Server 8.0.26 or earlier is deployed and high-privileged database access is reachable over a network. NetApp also published an advisory, so NetApp environments should be checked against that vendor guidance.

Exploitation context

The provided sources do not show CISA KEV listing or active exploitation. Oracle describes the issue as easily exploitable, but requiring a high-privileged attacker with network access via multiple protocols.

Researcher notes

Evidence is limited to official CVE data and vendor advisories. No CWE, exploit details, or active exploitation evidence are included. The main validation focus is version exposure, privilege boundaries, network reachability, and vendor patch status.

Mitigation direction

  • Inventory MySQL Server deployments and identify versions 8.0.26 or earlier.
  • Review Oracle October 2021 CPU guidance and apply applicable MySQL updates.
  • Restrict network access to MySQL administration paths and privileged accounts.
  • Review NetApp advisory for any affected NetApp-managed environments.
  • Monitor MySQL services for repeated crashes or unexplained hangs.

Validation and detection

  • Confirm running MySQL Server versions across production and backup environments.
  • Verify Oracle patch guidance has been applied for affected MySQL instances.
  • Check whether privileged MySQL access is limited to trusted networks and users.
  • Review service logs for recurring crashes, hangs, or forced restarts.
  • Check NetApp advisory applicability for deployed NetApp products.
Prepared
Confidence
high
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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.

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CVE-2021-35622 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
4.9 (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:H

Official CVE source material

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.

1CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS vector scores

1 official score

We 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.

ScoreVersionSeverityVectorExploitImpactSource
4.9CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H1.23.6Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

4.9Medium
CVSS 3.1 vector shape for CVE-2021-35622Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Oracle CorporationMySQL Server8.0.26 and priorListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.