CVE-2007-5922: The modules/mdop.m in the Cypress 1.0k script for BitchX, as downloaded from a distribution site in November 2

Routine

MEDIUM 5.0MITIGATEDOWNGRADE

CVE-2007-5922 is a medium-severity flaw (CVSS 5.0) affecting bitchx, cypress. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The modules/mdop.m in the Cypress 1.0k script for BitchX, as downloaded from a distribution site in November 2007, contains an externally introduced backdoor that e-mails sensitive information (hostnames, usernames, and shell history) to a fixed address.

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	1.0% (top 36%)
CISA exploited list	No
Weakness	CWE-200
Published	2007-11-10
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: bitchx · cypress

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

Am I affected?

Timeline

2007-11-10 02:46 UTCPublished CVE record published
2026-06-16 22:47 UTCUpdated Record last modified

bitchx bitchx MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

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

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

cypress cypress DOWNGRADE

Affected: 1.0k

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0k

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.0k (Debian / Ubuntu)

apt-cache madison cypress sudo apt install cypress=<VERSION_BEFORE_1.0k> sudo apt-mark hold cypress

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

dnf --showduplicates list cypress sudo dnf downgrade cypress-<VERSION_BEFORE_1.0k> sudo dnf versionlock add cypress

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-2007-5922?

bitchx: mitigate or apply the listed mitigation; cypress: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2007-5922 being exploited?

CVE-2007-5922 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-2007-5922 affect?

CVE-2007-5922 affects bitchx, cypress. Severity is medium (CVSS 5.0). The modules/mdop.m in the Cypress 1.0k script for BitchX, as downloaded from a distribution site in November 2007, contains an externally introduced backdoor that e-mails sensitive information (hostnames, usernames, and shell history) to a

How urgent is CVE-2007-5922?

Priority 34/100. No elevated risk signals yet.

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References

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