CVE-2025-6493

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.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• 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

0.53% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 44.8% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/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 2026-06-17.

Red Hat severity

Moderate. 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

2025-06-22 22:00Z1 YR AGO

Last updated

2025-09-29 13:48Z1 YR AGO

Reserved

2025-06-22

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Medium (CVSS 6.9)

CNA CVSS vector

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

Weaknesses

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

Data version

5.1

Document digest

611e957f6de5bcfbe5a79d75e558f578d6db20f323691532af5c249c4f1e98b7

• vuldb.comVDB-313610 | CodeMirror Markdown Mode markdown.js redoshttps://vuldb.com/?id.313610vdb-entrytechnical-description
• vuldb.comVDB-313610 | CTI Indicators (IOB, IOC, TTP, IOA)https://vuldb.com/?ctiid.313610signaturepermissions-required
• vuldb.comSubmit #598875 | codemirror codemirror5 <=5.17.0 Inefficient Regular Expression Complexityhttps://vuldb.com/?submit.598875third-party-advisory
• github.comhttps://github.com/codemirror/codemirror5/issues/7128exploitissue-tracking