CVE-2006-5111: The libksba library 0.9.12 and possibly other versions, as used by gpgsm in the newpg package on SUSE LINUX, a

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MEDIUM 5.0WATCHLISTDOWNGRADE

CVE-2006-5111 is a medium-severity flaw (CVSS 5.0) affecting libksba library. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The libksba library 0.9.12 and possibly other versions, as used by gpgsm in the newpg package on SUSE LINUX, allows attackers to cause a denial of service (application crash) via a malformed X.509 certificate in a signature.

Why this priority

On your watchlist

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

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	1.9% (top 20%)
CISA exploited list	No
Published	2006-10-03
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: libksba library

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

Am I affected?

Timeline

2006-10-03 04:03 UTCPublished CVE record published
2026-06-16 22:30 UTCUpdated Record last modified

libksba library libksba library DOWNGRADE

Affected: 0.9.12

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.9.12

1. Check installed version

apt-cache policy libksba-library || rpm -q libksba-library || libksba-library --version

2. No fixed release: DOWNGRADE to a release before 0.9.12 (Debian / Ubuntu)

apt-cache madison libksba-library sudo apt install libksba-library=<VERSION_BEFORE_0.9.12> sudo apt-mark hold libksba-library

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

dnf --showduplicates list libksba-library sudo dnf downgrade libksba-library-<VERSION_BEFORE_0.9.12> sudo dnf versionlock add libksba-library

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-2006-5111?

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

Is CVE-2006-5111 being exploited?

CVE-2006-5111 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-2006-5111 affect?

CVE-2006-5111 affects libksba library. Severity is medium (CVSS 5.0). The libksba library 0.9.12 and possibly other versions, as used by gpgsm in the newpg package on SUSE LINUX, allows attackers to cause a denial of service (application crash) via a malformed X.509 certificate in a signature.

How urgent is CVE-2006-5111?

Priority 43/100. On your watchlist

References

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