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CVE-2025-31127

MEDIUMCVSS 5.3/10EPSS 0.18%

Last modified

CVE-2025-31127 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. Element X Android is a Matrix Android Client provided by element.io. In Element X Android versions between 0.4.16 and 25.03.3, the entity in control of the element.json well-known file is able, under certain conditions, to get access to the media encryption keys used for an Element Call call. EPSS estimates a 0.18% chance of exploitation in the next 30 days.

Description

Element X Android is a Matrix Android Client provided by element.io. In Element X Android versions between 0.4.16 and 25.03.3, the entity in control of the element.json well-known file is able, under certain conditions, to get access to the media encryption keys used for an Element Call call. This vulnerability is fixed in 25.03.4.

Metrics

CVSS 3.1
5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS Probability
0.18%

7.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is CVE-2025-31127?
Element X Android is a Matrix Android Client provided by element.io. In Element X Android versions between 0.4.16 and 25.03.3, the entity in control of the element.json well-known file is able, under certain conditions, to get access to the media encryption keys used for an Element Call call. This vulnerability is fixed in 25.03.4.
How severe is CVE-2025-31127?
CVE-2025-31127 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.18% probability of exploitation in the next 30 days.
How do I fix CVE-2025-31127?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-31127?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST