CVE-2006-6184: Multiple stack-based buffer overflows in Allied Telesyn TFTP Server (AT-TFTP) 1.9, and possibly earlier, allow

Q: How do I fix CVE-2006-6184?

at-tftp: upgrade to newer than 1.9. Exact commands for each OS are on this page.

Q: Is CVE-2006-6184 being exploited?

CVE-2006-6184 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-2006-6184 affect?

CVE-2006-6184 affects at-tftp. Severity is high (CVSS 10.0). Multiple stack-based buffer overflows in Allied Telesyn TFTP Server (AT-TFTP) 1.9, and possibly earlier, allow remote attackers to cause a denial of service (crash) or execute arbitrary code via a long filename in a (1) GET or (2) PUT comma

Q: How urgent is CVE-2006-6184?

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

This week

HIGH 10.0UPGRADE

CVE-2006-6184 is a high-severity flaw (CVSS 10.0) affecting at-tftp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple stack-based buffer overflows in Allied Telesyn TFTP Server (AT-TFTP) 1.9, and possibly earlier, allow remote attackers to cause a denial of service (crash) or execute arbitrary code via a long filename in a (1) GET or (2) PUT command.

Why this priority

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

A fixed release or distro patch exists.

Risk facts

CVSS score	10.0 (High)
EPSS exploit chance	66.8% (top 1%)
CISA exploited list	No
Published	2006-12-01
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: alliedtelesyn

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

Am I affected?

Timeline

2006-12-01 00:28 UTCPublished CVE record published
2026-06-16 22:32 UTCUpdated Record last modified

alliedtelesyn at-tftp UPGRADE

Affected: <= 1.9

Fixed in: newer than 1.9

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy at-tftp || rpm -q at-tftp || at-tftp --version

2. UPGRADE to newer than 1.9 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade at-tftp

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade at-tftp

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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: Allied Telesyn TFTP (AT-TFTP) Server/Daemon 1.9 - Denial of Service
Exploit-DB: Allied Telesyn TFTP (AT-TFTP) Server/Daemon 2.0 - Stack Buffer Overflow (Denial of Service) (PoC)
Exploit-DB: Allied Telesyn TFTP (AT-TFTP) Server/Daemon 1.9 - 'Filename' Remote Buffer Overflow
Exploit-DB: Allied Telesyn TFTP (AT-TFTP) Server/Daemon 1.9 - Long Filename Overflow (Metasploit)
Metasploit: Allied Telesyn TFTP Server 1.9 Long Filename 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-2006-6184?

at-tftp: upgrade to newer than 1.9. Exact commands for each OS are on this page.

Is CVE-2006-6184 being exploited?

CVE-2006-6184 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-2006-6184 affect?

CVE-2006-6184 affects at-tftp. Severity is high (CVSS 10.0). Multiple stack-based buffer overflows in Allied Telesyn TFTP Server (AT-TFTP) 1.9, and possibly earlier, allow remote attackers to cause a denial of service (crash) or execute arbitrary code via a long filename in a (1) GET or (2) PUT comma

How urgent is CVE-2006-6184?

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

References

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