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Fencer Vulns
low 1.8

CVE-2025-21520 json

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Options).

published 2025-01-21 21 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-2509

cvss
1.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 23%
public exploits
0
none known

Summary

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Options). Supported versions that are affected are 8.0.40 and prior, 8.4.3 and prior and 9.1.0 and prior. Difficult to exploit vulnerability allows high privileged attacker with logon to the infrastructure where MySQL Server executes to compromise MySQL Server. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized read access to a subset of MySQL Server accessible data. CVSS 3.1 Base Score 1.8 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:L/I:N/A:N).

Patch / fix

  • oracle mysql_cluster 7.6.33, 8.0.41, 8.4.4, 9.1.1
  • oracle mysql 8.0.41, 8.4.4, 9.1.1
  • oracle mysql_server 8.0.41, 8.4.4, 9.1.1
  • mysql RHEL 9 8.0.41-2.el9_5
  • mysql-libs RHEL 9 8.0.41-2.el9_5
  • mysql-test RHEL 9 8.0.41-2.el9_5
  • mysql-common RHEL 9 8.0.41-2.el9_5
  • mysql-errmsg RHEL 9 8.0.41-2.el9_5
  • mysql-server RHEL 9 8.0.41-2.el9_5
  • mecab RHEL 8 0.996-2.module+el8.10.0+22857+7f331edd
  • mysql RHEL 8 8.0.41-1.module+el8.10.0+22857+7f331edd

red hat advisories RHSA-2025:1671RHSA-2025:1673

  • mysql AlmaLinux 9 8.0.41-2.el9_5
  • mysql-libs AlmaLinux 9 8.0.41-2.el9_5
  • mysql-test AlmaLinux 9 8.0.41-2.el9_5
  • mysql-common AlmaLinux 9 8.0.41-2.el9_5
  • mysql-errmsg AlmaLinux 9 8.0.41-2.el9_5
  • mysql-server AlmaLinux 9 8.0.41-2.el9_5
  • mecab AlmaLinux 8 0.996-2.module_el8.10.0+3965+b415b607
  • mecab AlmaLinux 8 0.996-2.module_el8.6.0+3340+d764b636

almalinux advisories ALSA-2025:1671ALSA-2025:1673

  • mysql Rocky Linux 9 8.0.41-2.el9_5
  • mecab Rocky Linux 8 0.996-2.module+el8.10.0+1676+9b4b6e24
  • mysql Rocky Linux 8 8.0.41-1.module+el8.10.0+1937+28fbbc83.0.1
  • mecab-ipadic Rocky Linux 8 2.7.0.20070801-17.module+el8.10.0+1937+28fbbc83

rocky linux advisories RLSA-2025:1671RLSA-2025:1673

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-21520 updated cvss 1.8

mysql: MySQL Server Options Vulnerability

  • Red Hat Enterprise Linux 10 mysql8.4
    affected: no fix available
  • Red Hat CodeReady Linux Builder (v. 9) mysql-libs 8.0.41-2.el9_5, mysql-test 8.0.41-2.el9_5
    fixed: vendor fix RHSA-2025:1671
  • Red Hat Enterprise Linux AppStream (v. 8) mecab 0.996-2.module+el8.10.0+22857+7f331edd, mysql 8.0.41-1.module+el8.10.0+22857+7f331edd, mysql-libs 8.0.41-1.module+el8.10.0+22857+7f331edd, mysql-test 8.0.41-1.module+el8.10.0+22857+7f331edd, mysql-common 8.0.41-1.module+el8.10.0+22857+7f331edd, mysql-errmsg 8.0.41-1.module+el8.10.0+22857+7f331edd, +3 more
    fixed: vendor fix RHSA-2025:1673
  • Red Hat Enterprise Linux AppStream (v. 9) mysql 8.0.41-2.el9_5, mysql-common 8.0.41-2.el9_5, mysql-errmsg 8.0.41-2.el9_5, mysql-server 8.0.41-2.el9_5
    fixed: vendor fix RHSA-2025:1671
  • Red Hat Enterprise Linux 6 mysql, mysql-libs, mysql-test, mysql-bench, mysql-server, mysql-embedded
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
21 mo ago

Exploit prediction

0.30% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 1.8 CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:L/I:N/A:N

Affected products

  • Oracle Corporation MySQL Cluster
  • Oracle Corporation MySQL Server

Classification

Weakness
  • CWE-732 Incorrect Permission Assignment for Critical Resource
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.