CVE-2025-4727

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• 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

0.70% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 50.5% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/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

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

2025-05-15 23:00Z1 YR AGO

Last updated

2025-05-16 13:21Z1 YR AGO

Reserved

2025-05-15

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Medium (CVSS 6.3)

CNA CVSS vector

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

Weaknesses

• CWE-400Uncontrolled Resource ConsumptionClass
• CWE-1333Inefficient Regular Expression ComplexityBase

Data version

5.1

Document digest

b12124eb1a97e83d7a5e92b89898ad3f9f7ab62f20f109c381f24265f7bbc9df

• vuldb.comVDB-309029 | Meteor livedata_server.js Object.assign redoshttps://vuldb.com/?id.309029vdb-entrytechnical-description
• vuldb.comVDB-309029 | CTI Indicators (IOB, IOC, TTP, IOA)https://vuldb.com/?ctiid.309029signaturepermissions-required
• vuldb.comSubmit #570441 | meteor https://www.meteor.com/ <=3.2.1 Inefficient Regular Expression Complexityhttps://vuldb.com/?submit.570441third-party-advisory
• github.comhttps://github.com/meteor/meteor/issues/13713issue-tracking
• github.comhttps://github.com/meteor/meteor/pull/13721issue-tracking
• github.comhttps://github.com/meteor/meteor/commit/f7ea6817b90952baaea9baace2a3b4366fee6a63patch
• github.comhttps://github.com/meteor/meteor/releases/tag/release/METEOR%403.2.2patch