CVE-2005-0595: Buffer overflow in ext.dll in BadBlue 2.55 allows remote attackers to execute arbitrary code via a long mfcisa

This week

HIGH 7.5DOWNGRADE

CVE-2005-0595 is a high-severity flaw (CVSS 7.5) affecting badblue. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflow in ext.dll in BadBlue 2.55 allows remote attackers to execute arbitrary code via a long mfcisapicommand parameter.

Why this priority

High 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	7.5 (High)
EPSS exploit chance	60.1% (top 1%)
CISA exploited list	No
Published	2005-05-02
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: working resources inc.

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

working resources inc. badblue DOWNGRADE

Affected: 2.55

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.55

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.55 (Debian / Ubuntu)

apt-cache madison badblue sudo apt install badblue=<VERSION_BEFORE_2.55> sudo apt-mark hold badblue

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

dnf --showduplicates list badblue sudo dnf downgrade badblue-<VERSION_BEFORE_2.55> sudo dnf versionlock add badblue

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: BadBlue 2.5 - 'ext.dll' Remote Buffer Overflow (Metasploit)
Exploit-DB: BadBlue 2.5 - Easy File Sharing Remote Buffer Overflow
Metasploit: BadBlue 2.5 EXT.dll 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-2005-0595?

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

Is CVE-2005-0595 being exploited?

CVE-2005-0595 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-2005-0595 affect?

CVE-2005-0595 affects badblue. Severity is high (CVSS 7.5). Buffer overflow in ext.dll in BadBlue 2.55 allows remote attackers to execute arbitrary code via a long mfcisapicommand parameter.

How urgent is CVE-2005-0595?

Priority 56/100. High severity; EPSS top 1%: very likely to be exploited; Public exploit reference

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References

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