CVE-2006-1198: Comvigo IM Lock 2006 uses a simple substitution cipher to encrypt a password stored in the msnvs\prc registry

Routine

LOW 3.7DOWNGRADE

CVE-2006-1198 is a low-severity flaw (CVSS 3.7) affecting im lock. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Comvigo IM Lock 2006 uses a simple substitution cipher to encrypt a password stored in the msnvs\prc registry value, for which all users have Read permission, which allows local users to bypass the product's blocking functionality by decrypting the password.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	3.7 (Low)
EPSS exploit chance	0.3% (top 78%)
CISA exploited list	No
Published	2006-03-14
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: comvigo

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

Am I affected?

Timeline

2006-03-14 01:06 UTCPublished CVE record published
2026-06-16 22:22 UTCUpdated Record last modified

comvigo im lock DOWNGRADE

Affected: home_2006 · professional_2006

Fixed in: no fixed release known

Safe to downgrade to: a release before home_2006

1. Check installed version

apt-cache policy im-lock || rpm -q im-lock || im-lock --version

2. No fixed release: DOWNGRADE to a release before home_2006 (Debian / Ubuntu)

apt-cache madison im-lock sudo apt install im-lock=<VERSION_BEFORE_home_2006> sudo apt-mark hold im-lock

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

dnf --showduplicates list im-lock sudo dnf downgrade im-lock-<VERSION_BEFORE_home_2006> sudo dnf versionlock add im-lock

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-2006-1198?

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

Is CVE-2006-1198 being exploited?

CVE-2006-1198 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-2006-1198 affect?

CVE-2006-1198 affects im lock. Severity is low (CVSS 3.7). Comvigo IM Lock 2006 uses a simple substitution cipher to encrypt a password stored in the msnvs\prc registry value, for which all users have Read permission, which allows local users to bypass the product's blocking functionality by decryp

How urgent is CVE-2006-1198?

Priority 19/100. No elevated risk signals yet.

References

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