CVE-2001-1140: BadBlue Personal Edition v1.02 beta allows remote attackers to read source code for executable programs by app

Routine

MEDIUM 5.0DOWNGRADE

CVE-2001-1140 is a medium-severity flaw (CVSS 5.0) affecting badblue. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

BadBlue Personal Edition v1.02 beta allows remote attackers to read source code for executable programs by appending a %00 (null byte) to the request.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	2.3% (top 17%)
CISA exploited list	No
Published	2001-08-22
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

2001-08-22 04:00 UTCPublished CVE record published
2026-06-16 21:55 UTCUpdated Record last modified

working resources inc. badblue DOWNGRADE

Affected: 1.02_beta

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.02_beta

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.02_beta (Debian / Ubuntu)

apt-cache madison badblue sudo apt install badblue=<VERSION_BEFORE_1.02_beta> sudo apt-mark hold badblue

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

dnf --showduplicates list badblue sudo dnf downgrade badblue-<VERSION_BEFORE_1.02_beta> 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.

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-2001-1140?

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

Is CVE-2001-1140 being exploited?

CVE-2001-1140 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-2001-1140 affect?

CVE-2001-1140 affects badblue. Severity is medium (CVSS 5.0). BadBlue Personal Edition v1.02 beta allows remote attackers to read source code for executable programs by appending a %00 (null byte) to the request.

How urgent is CVE-2001-1140?

Priority 38/100. No elevated risk signals yet.

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CVE-2005-0595 HIGH 7.5 DOWNGRADE Buffer overflow in ext.dll in BadBlue 2.55 allows remote attackers to execute arbitrary code via a long mfcisa

References

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