CVE-2005-0768: Buffer overflow in the administration web server for GoodTech Telnet Server 4.0 and 5.0, and possibly all vers

Q: How do I fix CVE-2005-0768?

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

Q: Is CVE-2005-0768 being exploited?

CVE-2005-0768 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2005-0768 affect?

CVE-2005-0768 affects goodtech telnet server. Severity is high (CVSS 10.0). Buffer overflow in the administration web server for GoodTech Telnet Server 4.0 and 5.0, and possibly all versions before 5.0.7, allows remote attackers to execute arbitrary code via a long string to port 2380.

Q: How urgent is CVE-2005-0768?

Priority 65/100. Critical severity; EPSS top 1%: very likely to be exploited; Public exploit reference

This week

HIGH 10.0DOWNGRADE

CVE-2005-0768 is a high-severity flaw (CVSS 10.0) affecting goodtech telnet server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflow in the administration web server for GoodTech Telnet Server 4.0 and 5.0, and possibly all versions before 5.0.7, allows remote attackers to execute arbitrary code via a long string to port 2380.

Why this priority

Critical severity
EPSS top 1%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	10.0 (High)
EPSS exploit chance	59.5% (top 1%)
CISA exploited list	No
Published	2005-05-02
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: goodtech systems

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

Am I affected?

Timeline

2005-05-02 04:00 UTCPublished CVE record published
2026-06-16 22:11 UTCUpdated Record last modified

goodtech systems goodtech telnet server DOWNGRADE

Affected: 4.0 · 5.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.0

1. Check installed version

apt-cache policy goodtech-telnet-server || rpm -q goodtech-telnet-server || goodtech-telnet-server --version

2. No fixed release: DOWNGRADE to a release before 4.0 (Debian / Ubuntu)

apt-cache madison goodtech-telnet-server sudo apt install goodtech-telnet-server=<VERSION_BEFORE_4.0> sudo apt-mark hold goodtech-telnet-server

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

dnf --showduplicates list goodtech-telnet-server sudo dnf downgrade goodtech-telnet-server-<VERSION_BEFORE_4.0> sudo dnf versionlock add goodtech-telnet-server

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: GoodTech Telnet Server < 5.0.7 - Buffer Overflow Crash
Exploit-DB: GoodTech Telnet Server 5.0.6 - Remote Buffer Overflow (Metasploit)
Metasploit: GoodTech Telnet Server Buffer Overflow

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-2005-0768?

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

Is CVE-2005-0768 being exploited?

CVE-2005-0768 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-2005-0768 affect?

CVE-2005-0768 affects goodtech telnet server. Severity is high (CVSS 10.0). Buffer overflow in the administration web server for GoodTech Telnet Server 4.0 and 5.0, and possibly all versions before 5.0.7, allows remote attackers to execute arbitrary code via a long string to port 2380.

How urgent is CVE-2005-0768?

Priority 65/100. Critical severity; EPSS top 1%: very likely to be exploited; Public exploit reference

References

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