CVE-2021-35621

FAUCET Score

CVE-2021-35621 is a difficult-to-exploit vulnerability in Oracle MySQL Cluster, affecting versions 7.4.33 and prior, 7.5.23 and prior, 7.6.19 and prior, and 8.0.26 and prior, as well as several NetApp products utilizing MySQL Cluster. This vulnerability, with a CVSS 3.1 Base Score of 6.3 (Medium), requires a high-privileged attacker with physical network access to the MySQL Cluster hardware and human interaction from a non-attacker to achieve a complete system takeover. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

Vendor	Product	Version(s)	CPE
		>= 7.4.0, <= 7.4.33CPE matchmatch criteria	cpe:2.3:a:oracle:mysql_cluster::::::::
		>= 7.5.0, <= 7.5.23CPE matchmatch criteria	cpe:2.3:a:oracle:mysql_cluster::::::::
		>= 7.6.0, <= 7.6.19CPE matchmatch criteria	cpe:2.3:a:oracle:mysql_cluster::::::::
		>= 8.0.0, <= 8.0.26CPE matchmatch criteria	cpe:2.3:a:oracle:mysql_cluster::::::::
		Range not provided by sourceCPE matchmatch criteria	cpe:2.3:a:netapp:active_iq_unified_manager:-:::::vmware_vsphere::

CVSS Data

CVSS version used by this source: 3.1

6.3MEDIUM

CVSS:3.1/AV:A/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H

Attack Vector

ADJACENT_NETWORK

Attack Complexity

HIGH

Privileges Required

HIGH

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

Exploitability Score

0.4

Impact Score

5.9

CvssVersion

3.1

Exploit Intelligence

EPSS Score

46.75%

Probability of exploitation in next 30 days

EPSS Percentile

98.7%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

This CVE's current EPSS score of 0.4675 is in the 79th percentile among its peer group of 49 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.8 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

microsoftpatch availablevia msrc

Product: 18974-16820Fixed in: 8.0.27-1

microsoftpatch availablevia msrc

Product: cm1 mysql 8.0.27-1 on CBL Mariner 1.0Fixed in: 8.0.27-1

oraclevendor investigatingvia nvd_reference

View patch

Vendor Advisories (1)

microsoft2021-Oct/CVE-2021-35621Moderate

Vulnerability in the MySQL Cluster product of Oracle MySQL (component: Cluster: General). Supported versions that are affected are 7.4.33 and prior 7.5.23 and prior 7.6.19 and prior and 8.0.26 and prior. Difficult to exploit vulnerability allows high privileged attacker with access to the physical communication segment attached to the hardware where the MySQL Cluster executes to compromise MySQL Cluster. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in takeover of MySQL Cluster. CVSS 3.1 Base Score 6.3 (Confidentiality Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:A/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H).

Oct 12, 2021

References

security.netapp.com / advisory/ntap-20211022-0003

Third Party Advisory

oracle.com / security-alerts/cpuoct2021.html

Vendor Advisory

zerodayinitiative.com / advisories/ZDI-21-1232

Third Party AdvisoryVDB Entry