Home/CVE/The Matrix specification before 1.16 (i.e., with a room version before 12 and State Resolution before 2.1) has deficient
CVE

CVE-2025-49090

The Matrix specification before 1.16 (i.e., with a room version before 12 and State Resolution before 2.1) has deficient

The Matrix specification before 1.16 (i.e., with a room version before 12 and State Resolution before 2.1) has deficient state resolution.

HIGH · CVSS 7.1 EPSS 0.0005
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-642External Control of Critical State Data
▣

Scoring & Timeline

7.1
HIGH · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD02 Oct 2025 · 07:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:L
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

1
suse-csafopenSUSE-SU-2025:15436-1
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/Nheko-Reborn/nheko/issues/1931
https://github.com/matrix-org/matrix-spec/releases/tag/v1.16
https://matrix.org/blog/2025/08/project-hydra-improving-state-res/
https://matrix.org/blog/2025/08/security-release/
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