CVE-2009-1617: Teraway LinkTracker 1.0 allows remote attackers to bypass authentication and gain administrative access via a

This month

HIGH 7.5DOWNGRADE

CVE-2009-1617 is a high-severity flaw (CVSS 7.5) affecting linktracker. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Teraway LinkTracker 1.0 allows remote attackers to bypass authentication and gain administrative access via a userid=1&lvl=1 value for the twLTadmin cookie.

Why this priority

High severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	2.5% (top 15%)
CISA exploited list	No
Weakness	CWE-287
Published	2009-05-12
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: teraway

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2009-05-12 16:30 UTCPublished CVE record published
2026-06-16 23:07 UTCUpdated Record last modified

teraway linktracker DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy linktracker || rpm -q linktracker || linktracker --version

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison linktracker sudo apt install linktracker=<VERSION_BEFORE_1.0> sudo apt-mark hold linktracker

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list linktracker sudo dnf downgrade linktracker-<VERSION_BEFORE_1.0> sudo dnf versionlock add linktracker

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Teraway LinkTracker 1.0 - Insecure Cookie Handling

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.

Quick answers

How do I fix CVE-2009-1617?

linktracker: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2009-1617 being exploited?

CVE-2009-1617 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2009-1617 affect?

CVE-2009-1617 affects linktracker. Severity is high (CVSS 7.5). Teraway LinkTracker 1.0 allows remote attackers to bypass authentication and gain administrative access via a userid=1&lvl=1 value for the twLTadmin cookie.

How urgent is CVE-2009-1617?

Priority 52/100. High severity; Public exploit reference

References

← Back to latest CVEs