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CVE-2021-2010

19
FAUCET Score

CVE-2021-2010 is a difficult-to-exploit vulnerability within the C API component of Oracle MySQL Client, affecting versions 5.6.50 and prior, 5.7.32 and prior, and 8.0.22 and prior. A low-privileged attacker with network access can leverage this to achieve unauthorized data modification (insert, update, delete) and cause a partial denial of service. With a CVSS 3.1 Base Score of 4.2 (Medium), the attack complexity is high, and it primarily impacts integrity and availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.6.0, <= 5.6.50CPE matchmatch criteria
cpe:2.3:a:oracle:mysql:*:*:*:*:*:*:*:*
>= 5.7.0, <= 5.7.32CPE matchmatch criteria
cpe:2.3:a:oracle:mysql:*:*:*:*:*:*:*:*
>= 8.0.0, <= 8.0.22CPE matchmatch criteria
cpe:2.3:a:oracle:mysql:*:*:*:*:*:*:*:*
32CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
33CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.2MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
1.6
Impact Score
2.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.41%
Probability of exploitation in next 30 days
EPSS Percentile
70.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0141 is in the 69th percentile among its peer group of 1,428 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (16)

microsoftpatch availablevia msrc
Product: mysql-debuginfo-8.0.26-1.cm1.x86_64.rpm on CBL Mariner 1.0 x64Fixed in: 8.0.26-1
microsoftpatch availablevia msrc
Product: mysql-8.0.26-1.cm1.aarch64.rpm on CBL Mariner 1.0 ARMFixed in: 8.0.26-1
microsoftpatch availablevia msrc
Product: mysql-devel-8.0.26-1.cm1.aarch64.rpm on CBL Mariner 1.0 ARMFixed in: 8.0.26-1
microsoftpatch availablevia msrc
Product: 12990-12137Fixed in: 8.0.26-1
microsoftpatch availablevia msrc
Product: 12991-12138Fixed in: 8.0.26-1
microsoftpatch availablevia msrc
Product: 12992-12138Fixed in: 8.0.26-1
microsoftpatch availablevia msrc
Product: 12993-12138Fixed in: 8.0.26-1
microsoftpatch availablevia msrc
Product: 12988-12137Fixed in: 8.0.26-1
microsoftpatch availablevia msrc
Product: mysql-debuginfo-8.0.26-1.cm1.aarch64.rpm on CBL Mariner 1.0 ARMFixed in: 8.0.26-1
microsoftpatch availablevia msrc
Product: 12989-12137Fixed in: 8.0.26-1
microsoftpatch availablevia msrc
Product: mysql-8.0.26-1.cm1.x86_64.rpm on CBL Mariner 1.0 x64Fixed in: 8.0.26-1
microsoftpatch availablevia msrc
Product: mysql-devel-8.0.26-1.cm1.x86_64.rpm on CBL Mariner 1.0 x64Fixed in: 8.0.26-1
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-mysql80-mysql-0:8.0.26-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: mysql:8.0-8040020210824134700.522a0ee4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSFixed in: rh-mysql80-mysql-0:8.0.26-1.el7
View patch
oraclevendor investigatingvia nvd_reference
View patch

Vendor Advisories (2)

redhatCVE-2021-2010Moderate

mysql: C API unspecified vulnerability (CPU Jan 2021)

Jan 19, 2021
microsoft2021-Jan/CVE-2021-2010

Vulnerability in the MySQL Client product of Oracle MySQL (component: C API). Supported versions that are affected are 5.6.50 and prior 5.7.32 and prior and 8.0.22 and prior. Difficult to exploit vulnerability allows low privileged attacker with network access via multiple protocols to compromise MySQL Client. Successful attacks of this vulnerability can result in unauthorized update insert or delete access to some of MySQL Client accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of MySQL Client. CVSS 3.1 Base Score 4.2 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L).

Jan 12, 2021

References

lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/CS5THZSGI7O2CZO44NWYE57AG2T7NK3K
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/T7EAHJPWOOF4D6PEFLXW5IQWRRSZ3HRC
security.gentoo.org / glsa/202105-27
Third Party Advisory
security.netapp.com / advisory/ntap-20210622-0001
Third Party Advisory
oracle.com / security-alerts/cpujan2021.html
Vendor Advisory