CVE-2009-3115: SolarWinds TFTP Server 9.2.0.111 and earlier allows remote attackers to cause a denial of service (service sto

Q: How do I fix CVE-2009-3115?

tftp server: upgrade to newer than 9.2.0.111. Exact commands for each OS are on this page.

Q: Is CVE-2009-3115 being exploited?

CVE-2009-3115 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-2009-3115 affect?

CVE-2009-3115 affects tftp server. Severity is medium (CVSS 5.0). SolarWinds TFTP Server 9.2.0.111 and earlier allows remote attackers to cause a denial of service (service stop) via a crafted Option Acknowledgement (OACK) request. NOTE: some of these details are obtained from third party information.

Q: How urgent is CVE-2009-3115?

Priority 46/100. EPSS top 4%: very likely to be exploited; Public exploit reference

This week

MEDIUM 5.0UPGRADE

CVE-2009-3115 is a medium-severity flaw (CVSS 5.0) affecting tftp server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

SolarWinds TFTP Server 9.2.0.111 and earlier allows remote attackers to cause a denial of service (service stop) via a crafted Option Acknowledgement (OACK) request. NOTE: some of these details are obtained from third party information.

Why this priority

EPSS top 4%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	10.7% (top 4%)
CISA exploited list	No
Weakness	CWE-20
Published	2009-09-09
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: solarwinds

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

Am I affected?

Timeline

2009-09-09 22:30 UTCPublished CVE record published
2026-06-16 23:10 UTCUpdated Record last modified

solarwinds tftp server UPGRADE

Affected: <= 9.2.0.111 · 5.0.55 · 5.0.60 · 8.1 · 8.2

Fixed in: newer than 9.2.0.111

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 9.2.0.111 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade tftp-server

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: SolarWinds TFTP Server 9.2.0.111 - Remote Denial of Service

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-2009-3115?

tftp server: upgrade to newer than 9.2.0.111. Exact commands for each OS are on this page.

Is CVE-2009-3115 being exploited?

CVE-2009-3115 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-2009-3115 affect?

CVE-2009-3115 affects tftp server. Severity is medium (CVSS 5.0). SolarWinds TFTP Server 9.2.0.111 and earlier allows remote attackers to cause a denial of service (service stop) via a crafted Option Acknowledgement (OACK) request. NOTE: some of these details are obtained from third party information.

How urgent is CVE-2009-3115?

Priority 46/100. EPSS top 4%: very likely to be exploited; Public exploit reference

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References

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