PatchTheCEVCVE-2025-61581: ** UNSUPPORTED WHEN ASSIGNED ** Inefficient Regular Expression Complexity vulnerability in Apache Traffic Cont
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HIGH 7.5REMOTEWATCHLISTUPGRADE
CVE-2025-61581 is a high-severity flaw (CVSS 7.5) affecting traffic control. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
** 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 re
Why this priority
- High severity
- Remotely exploitable, no login, no user action
- On your watchlist
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.5 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.7% (top 46%) |
| CISA exploited list | No |
| Weakness | CWE-1333 |
| Published | 2025-10-16 |
| Last modified | 2026-10-23 |
Publisher (CNA): Apache Software Foundation · Vendor: apache
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
apache traffic control UPGRADE
Affected: <= 8.0.2
Fixed in: newer than 8.0.2
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy traffic-control || rpm -q traffic-control || traffic-control --version
2. UPGRADE to newer than 8.0.2 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade traffic-control
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade traffic-control
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
Exact fixes by distribution
Go · github.com/apache/trafficcontrol/v8 · NO FIX YET · vulnerable: <= 8.0.2 · source
Fedora 46 · python-streamlink · FIXED · 8.6.2-1.fc46 · FEDORA-2026-a56fcfdc08 · source
sudo dnf upgrade --advisory=FEDORA-2026-a56fcfdc08
Fedora ELN · valgrind · FIXED · 3.28.0-1.eln159 · FEDORA-2026-c593ef1d15 · source
sudo dnf upgrade --advisory=FEDORA-2026-c593ef1d15
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.