CVE-2025-61672

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

0.47% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 41.0% of scored records. A rank, not a probability.

NVD base score

5.3 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Deferred. NVD last modified this record on 2026-10-08.

Red Hat severity

Low. Red Hat's rating for its own products, not a CVSS rating.

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

2025-10-08 14:55Z1 YR AGO

Last updated

2025-10-15 16:11Z1 YR AGO

Reserved

2025-09-29

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

Medium (CVSS 5.3)

CNA CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N

Weaknesses

• CWE-1287Improper Validation of Specified Type of InputBase
• CWE-1286Improper Validation of Syntactic Correctness of InputBase

Data version

5.1

Document digest

8619e388cab9b40e14985e75bd13e91fa23c66d8651ff2d5254e5f326cde51f9

• github.comhttps://github.com/element-hq/synapse/security/advisories/GHSA-fh66-fcv5-jjfrx_refsource_CONFIRM
• github.comhttps://github.com/element-hq/synapse/pull/17097x_refsource_MISC
• github.comhttps://github.com/element-hq/synapse/commit/26aaaf9e48fff80cf67a20c691c75d670034b3c1x_refsource_MISC
• github.comhttps://github.com/element-hq/synapse/commit/7069636c2d6d1ef2022287addf3ed8b919ef2740x_refsource_MISC
• github.comhttps://github.com/element-hq/synapse/releases/tag/v1.138.3x_refsource_MISC
• github.comhttps://github.com/element-hq/synapse/releases/tag/v1.139.1x_refsource_MISC