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Vulnerabilities

Vulnerability · CVE-2025-54315

The Matrix specification before 1.16 (i.e., with a room version before 12) lacks create event uniqueness.

Published Oct 2, 2025 · catalog updated Oct 2, 2025 · Matrix Matrix specification

Last checked Nov 1, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-54315. EPSS is 0.34%. Act only if a listed version of Matrix Matrix specification is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High7.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.34%
Remediation
Version ranges on file
Affected products
vendor Matrix Matrix specification 0 <1.16

The Matrix specification before 1.16 (i.e., with a room version before 12) lacks create event uniqueness.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Matrix Matrix specification 0 <1.160 <1.16

How to fix CVE-2025-54315

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-54315. EPSS is 0.34%. Act only if a listed version of Matrix Matrix specification is installed.

Which versions are affected?

Compare what you have installed with Matrix Matrix specification 0 <1.16 0 <1.16. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.34%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 2, 2025 · EUVD

    Detected

    The Matrix specification before 1.16 (i.e., with a room version before 12) lacks create event uniqueness.

  2. Oct 2, 2025 · EUVD

    Updated

    The Matrix specification before 1.16 (i.e., with a room version before 12) lacks create event uniqueness.

Sources

  • CVE.orgVulnerability recordCVE-2025-54315

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-54315

    30-day exploitation probability 0.34%

    first.org
  • EUVDVulnerability recordEUVD-2025-32574

    The Matrix specification before 1.16 (i.e., with a room version before 12) lacks create event uniqueness.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 1, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 1, 2026
  • CVE.orgOct 23, 2026
  • EUVDOct 23, 2026