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CVE-2021-2429

42
FAUCET Score

CVE-2021-2429 is a vulnerability affecting Oracle MySQL Server versions 8.0.25 and prior, specifically within the InnoDB component. This unauthenticated network vulnerability, while difficult to exploit, can lead to a complete denial of service (DoS) by causing the MySQL Server to hang or repeatedly crash. With a CVSS 3.1 Base Score of 5.9 (Medium), its primary impact is on availability. There is no evidence of active exploitation, nor are there known public exploit modules available in Metasploit, Nuclei, or ExploitDB. Community discussion is minimal, with only one mention on Reddit regarding a heap-based buffer overflow in the MySQL InnoDB memcached plugin, which aligns with the vulnerability's characteristics. No media coverage has been observed for this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 8.0.0, <= 8.0.25CPE matchmatch criteria
cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:netapp:oncommand_insight:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.9MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
41.48%
Probability of exploitation in next 30 days
EPSS Percentile
98.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.4148 is in the 99th percentile among its peer group of 19,955 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 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 (4)

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 7Fixed in: rh-mysql80-mysql-0:8.0.26-1.el7
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 (1)

redhatCVE-2021-2429Moderate

mysql: InnoDB unspecified vulnerability (CPU Jul 2021)

Jul 20, 2021

References

security.netapp.com / advisory/ntap-20210723-0001
Third Party Advisory
oracle.com / security-alerts/cpujul2021.html
Vendor Advisory
zerodayinitiative.com / advisories/ZDI-21-889
Third Party Advisory