What’s Vulnerable › Vulnerabilities

CVE-2025-61581: Apache Traffic Control: ReDoS issue in Traffic Router configuration

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-10-16 · updated 2026-10-23
• Weakness: CWE-1333

Description

** 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 Router component could specify malicious patterns and cause unavailability. As this project is retired, we do not plan to release a version that fixes this issue. Users are recommended to find an alternative or restrict access to the instance to trusted users. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.

Affected products

• Apache Software Foundation Apache Traffic Control: through 8.0.2

References

• https://lists.apache.org/thread/mx2jxgnlop2f4vbqnvmrldh4pqmobxvp
• http://www.openwall.com/lists/oss-security/2025/10/16/3

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