CVE-2003-0332: The ISAPI extension in BadBlue 1.7 through 2.2, and possibly earlier versions, modifies the first two letters

Q: How do I fix CVE-2003-0332?

badblue: upgrade to newer than 2.2. Exact commands for each OS are on this page.

Q: Is CVE-2003-0332 being exploited?

CVE-2003-0332 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-2003-0332 affect?

CVE-2003-0332 affects badblue. Severity is high (CVSS 7.6). The ISAPI extension in BadBlue 1.7 through 2.2, and possibly earlier versions, modifies the first two letters of a filename extension after performing a security check, which allows remote attackers to bypass authentication via a filename w

Q: How urgent is CVE-2003-0332?

Priority 55/100. High severity; EPSS top 6%: very likely to be exploited; Public exploit reference

This month

HIGH 7.6UPGRADE

CVE-2003-0332 is a high-severity flaw (CVSS 7.6) affecting badblue. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The ISAPI extension in BadBlue 1.7 through 2.2, and possibly earlier versions, modifies the first two letters of a filename extension after performing a security check, which allows remote attackers to bypass authentication via a filename with a .ats extension instead of a .hts extension.

Why this priority

High severity
EPSS top 6%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.6 (High)
EPSS exploit chance	7.0% (top 6%)
CISA exploited list	No
Published	2003-06-09
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

2003-06-09 04:00 UTCPublished CVE record published
2026-06-16 22:02 UTCUpdated Record last modified

working resources inc. badblue UPGRADE

Affected: <= 2.2

Fixed in: newer than 2.2

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 2.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade badblue

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade badblue

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: Working Resources BadBlue 1.7.x/2.x - Unauthorized HTS Access

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-2003-0332?

badblue: upgrade to newer than 2.2. Exact commands for each OS are on this page.

Is CVE-2003-0332 being exploited?

CVE-2003-0332 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-2003-0332 affect?

CVE-2003-0332 affects badblue. Severity is high (CVSS 7.6). The ISAPI extension in BadBlue 1.7 through 2.2, and possibly earlier versions, modifies the first two letters of a filename extension after performing a security check, which allows remote attackers to bypass authentication via a filename w

How urgent is CVE-2003-0332?

Priority 55/100. High severity; EPSS top 6%: very likely to be exploited; Public exploit reference

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References

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