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TI-2021-02059 Aliases CVE-2021-2390GHSA-m34g-pfxp-wfvq

Integer underflow in Oracle MySQL Server

Priority LOW 34CWE-191Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-191 and the CVSS impact.

Summary

Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB). Supported versions that are affected are 5.7.34 and prior and 8.0.25 and prior. Difficult to exploit vulnerability allows unauthenticated 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 5.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.04267 91st percentileScored 2026-11-07
Fix Fixed Red Hat: 2 advisories

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
OracleMySQL Serverup to 5.7.34; up to 8.0.25—No fix listedCNA
  • MySQL Server VendorOracle Affected up to 5.7.34; up to 8.0.25 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*5.7.0 – 5.7.34; 8.0.0 – 8.0.25VulnerableOracle
cpe:2.3:a:netapp:oncommand_insight:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
  • cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:* Versions 5.7.0 – 5.7.34; 8.0.0 – 8.0.25 Vulnerable ·Oracle
  • cpe:2.3:a:netapp:oncommand_insight:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp

Remediation

Red Hat 2 advisories

  • RHSA-2021:3811 Released 2021-10-12 · Red Hat rating Moderate
    rh-mysql80-mysql security, bug fix, and enhancement update
    • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) rh-mysql80-mysql-8.0.26-1.el7, rh-mysql80-mysql-common-8.0.26-1.el7, rh-mysql80-mysql-config-8.0.26-1.el7 +7
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7) rh-mysql80-mysql-8.0.26-1.el7, rh-mysql80-mysql-common-8.0.26-1.el7, rh-mysql80-mysql-config-8.0.26-1.el7 +7
    • Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) rh-mysql80-mysql-8.0.26-1.el7, rh-mysql80-mysql-common-8.0.26-1.el7, rh-mysql80-mysql-config-8.0.26-1.el7 +7
  • RHSA-2021:3590 Released 2021-09-21 · Red Hat rating Moderate
    mysql:8.0 security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 8) mecab-0.996-1.module+el8.0.0+3898+e09bb8de.9.aarch64::mysql:8.0, mecab-0.996-1.module+el8.0.0+3898+e09bb8de.9.ppc64le::mysql:8.0, mecab-0.996-1.module+el8.0.0+3898+e09bb8de.9.s390x::mysql:8.0 +40

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2021:3590
Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2021:3811
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7)Fixed RHSA-2021:3811
Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2021:3811
Not affected: 7 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9
  • Red Hat OpenStack Platform 10 (Newton)
  • Red Hat OpenStack Platform 13 (Queens)
  • Red Hat Software Collections

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-2390
  2. 2026-10-03 Alias added: GHSA-m34g-pfxp-wfvq

References

Advisory 3

  • TI-2021-02645 SM2 Decryption Buffer Overflow CVSS 3.1CRITICAL 9.8
  • TI-2022-01176 The c_rehash script allows command injection CVSS 3.1CRITICAL 9.8
  • TI-2021-04451 XStream is vulnerable to an Arbitrary Code Execution attack CVSS 3.1CRITICAL 9.1
  • TI-2021-04444 XStream is vulnerable to an Arbitrary Code Execution attack CVSS 3.1CRITICAL 9.8
  • TI-2021-05762 Use after free in https://github.com/curl/curl CVSS 3.1HIGH 8.1
  • TI-2021-05807 Cleartext transmission of sensitive information in https://github.com/curl/curl CVSS 3.1HIGH 7.5
See all 347 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences