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CVE Record

CVE-2021-35607: Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: DML).

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: DML). Supported versions that are affected are 8.0.26 and prior. Easily exploitable vulnerability allows low 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 6.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).

MediumCVSS 6.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2021-35607 can let a low-privileged remote user crash or hang affected MySQL Server instances. The business risk is service outage, not data theft or tampering based on the provided sources. Systems running MySQL Server 8.0.26 or earlier need vendor-guided remediation.

Executive priority

Treat this as a moderate availability risk. Prioritize remediation for production databases supporting customer-facing, revenue, or operationally critical services, especially where many low-privileged users or applications can connect.

Technical view

Oracle describes a MySQL Server vulnerability in the Server: DML component affecting supported versions 8.0.26 and prior. CVSS 3.1 is 6.5 with AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H, indicating network-accessible denial of service after low-privileged access.

Likely exposure

Exposure is most likely on Oracle MySQL Server 8.0.26 and prior where database access is reachable over supported network protocols by low-privileged users or applications.

Exploitation context

The source bundle says the issue is easily exploitable and can cause a hang or repeatable complete crash. It does not show CISA KEV listing, active exploitation, public exploit use, or confidentiality/integrity impact.

Researcher notes

The provided sources identify component, affected version range, CVSS vector, and denial-of-service impact, but do not include root-cause detail, proof-of-concept status, or a precise fixed MySQL version. Avoid asserting exploit activity without additional evidence.

Mitigation direction

  • Check Oracle CPU guidance for the applicable MySQL Server update.
  • Upgrade affected MySQL Server 8.0.26 and prior deployments through vendor-supported channels.
  • Apply relevant downstream vendor packages for Fedora-managed systems.
  • Review NetApp guidance if MySQL is used in affected NetApp-supported contexts.
  • Restrict MySQL network reachability to required clients and trusted networks.
  • Limit low-privileged database accounts to necessary access only.

Validation and detection

  • Inventory MySQL Server versions and flag 8.0.26 and prior.
  • Confirm applied Oracle or distribution package updates against vendor advisories.
  • Identify internet-facing or broadly reachable MySQL endpoints.
  • Review low-privileged accounts with network access to affected servers.
  • Monitor affected services for unexplained hangs, crashes, or repeated restarts.
Prepared
Confidence
medium
Sources
6

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

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CVE-2021-35607 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
6.5 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:L/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
6Source 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
6.5CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H2.83.6Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

6.5Medium
CVSS 3.1 vector shape for CVE-2021-35607Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:L/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.