CVE-2006-1115: nCipher HSM before 2.22.6, when generating a Diffie-Hellman public/private key pair without any specified Disc

Routine

LOW 2.6MITIGATEDOWNGRADEMITIGATE

CVE-2006-1115 is a low-severity flaw (CVSS 2.6) affecting chil, mscapi csp, ncipher software cd. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

nCipher HSM before 2.22.6, when generating a Diffie-Hellman public/private key pair without any specified DiscreteLogGroup parameters, chooses random parameters that could allow an attacker to crack the private key in significantly less time than a brute force attack.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	2.6 (Low)
EPSS exploit chance	1.2% (top 32%)
CISA exploited list	No
Published	2006-03-09
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: ncipher

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

Am I affected?

Timeline

2006-03-09 13:06 UTCPublished CVE record published
2026-06-16 22:22 UTCUpdated Record last modified

ncipher chil 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 chil || rpm -q chil || chil --version

No fixed or unaffected release known

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

ncipher mscapi csp DOWNGRADE

Affected: 5.50 · 5.54

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.50

1. Check installed version

apt-cache policy mscapi-csp || rpm -q mscapi-csp || mscapi-csp --version

2. No fixed release: DOWNGRADE to a release before 5.50 (Debian / Ubuntu)

apt-cache madison mscapi-csp sudo apt install mscapi-csp=<VERSION_BEFORE_5.50> sudo apt-mark hold mscapi-csp

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

dnf --showduplicates list mscapi-csp sudo dnf downgrade mscapi-csp-<VERSION_BEFORE_5.50> sudo dnf versionlock add mscapi-csp

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.

ncipher ncipher software cd 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 ncipher-software-cd || rpm -q ncipher-software-cd || ncipher-software-cd --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network 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-2006-1115?

chil: mitigate or apply the listed mitigation; mscapi csp: downgrade or apply the listed mitigation; ncipher software cd: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2006-1115 being exploited?

CVE-2006-1115 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-2006-1115 affect?

CVE-2006-1115 affects chil, mscapi csp, ncipher software cd. Severity is low (CVSS 2.6). nCipher HSM before 2.22.6, when generating a Diffie-Hellman public/private key pair without any specified DiscreteLogGroup parameters, chooses random parameters that could allow an attacker to crack the private key in significantly less tim

How urgent is CVE-2006-1115?

Priority 26/100. No elevated risk signals yet.

References

← Back to latest CVEs