CVE-2025-30355

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

1.22% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 68.4% of scored records. A rank, not a probability.

NVD base score

7.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2025-03-27 00:59Z1 YR AGO

Last updated

2025-03-27 13:47Z1 YR AGO

Reserved

2025-03-21

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

High (CVSS 7.1)

CNA CVSS vector

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

Weaknesses

• CWE-20Improper Input ValidationClass

Data version

5.1

Document digest

0fcf46f6809e4f981e804d7c6b70e089a91ef107e04cb2ac6c5b605bbb2f9148

• github.comhttps://github.com/element-hq/synapse/security/advisories/GHSA-v56r-hwv5-mxg6x_refsource_CONFIRM
• github.comhttps://github.com/element-hq/synapse/commit/2277df2a1eb685f85040ef98fa21d41aa4cdd389x_refsource_MISC
• github.comhttps://github.com/element-hq/synapse/releases/tag/v1.127.1x_refsource_MISC