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VulnerabilityPublished Updated

CVE-2025-21540: Incorrect Authorization

Source GCVE Database

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Authoritative record:CVE-2025-21540· Medium 5.4

Not known to be exploited · CVSS 5.4 Medium · fixed in 9.1.1 : update MySQL Server when convenient.

Data as of 30 Oct 2026, 01:03 UTC

CVSS 3.1 base score
5.4Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (oracle)CVSS 3.15.4
Patch
Available – fixed in 9.1.1, 8.4.4, 8.0.41
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 21 Jan 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Upgrade com.oracle/mysql-server to 9.1.1, 8.4.4 or 8.0.41.

Affected software

ProductAffectedFixed in
Mavencom.oracle/mysql-serverpkg:maven/com.oracle/mysql-serverOther threatsAffected
  • <8.0.41
  • <8.4.4
  • <9.1.1
Fixed in
  • 8.0.41
  • 8.4.4
  • 9.1.1

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Oracle has released patches for this vulnerability as part of the January 2025 Critical Patch Update. Users should apply these security patches promptly to remediate the vulnerability. Oracle strongly recommends remaining on actively-supported versions and applying Critical Patch Updates without delay.

Description

A vulnerability in Oracle MySQL Server affects versions 8.0.40 and prior, 8.4.3 and prior, and 9.1.0 and prior. It allows a low-privileged attacker with network access via multiple protocols to gain unauthorized read and write access to some MySQL Server accessible data. The vulnerability has a CVSS 3.1 base score of 5.4, indicating medium severity with impacts on confidentiality and integrity but no impact on availability. Oracle has released patches as part of their January 2025 Critical Patch Update.

References

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