What is CVE-2025-61581?

CVE-2025-61581 is a high-severity vulnerability in Apache Traffic_control, classified under Inefficient Regular Expression Complexity. CVSS score: 7.5/10. Published 2025-10-16.

How severe is CVE-2025-61581?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Apache Traffic_control

CVE-2025-61581

** UNSUPPORTED WHEN ASSIGNED ** Inefficient Regular Expression Complexity vulnerability in Apache Traffic Control. This issue affects Apache Traffic Control: all versions. People with access to the management interface of the Traffic Rou…

Vulnerability class: ReDoS (Regular Expression Denial of Service)

EPSS: 0.007 (47.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Apache Traffic_control
Apache Software Foundation Traffic Control — versions 0

Weakness classification (CWE)

CWE-1333 — Inefficient Regular Expression Complexity

References

security@apache.org (vendor-advisory, Mailing List, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2025-61581?: CVE-2025-61581 is a high-severity vulnerability in Apache Traffic_control, classified under Inefficient Regular Expression Complexity. CVSS score: 7.5/10. Published 2025-10-16.
How severe is CVE-2025-61581?: High severity. CVSS v3 base score is 7.5 out of 10.