CVE-2006-5656: Memory leak in the push_align function in src/util.c in Vilistextum before 2.6.9 allows remote attackers to ca

Routine

MEDIUM 5.0DOWNGRADE

CVE-2006-5656 is a medium-severity flaw (CVSS 5.0) affecting vilistextum. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Memory leak in the push_align function in src/util.c in Vilistextum before 2.6.9 allows remote attackers to cause a denial of service (memory consumption) via unspecified vectors related to the tmp_align variable. NOTE: it is not clear whether this is a vulnerability, due to the functionality of the product.

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	1.5% (top 25%)
CISA exploited list	No
Weakness	CWE-399
Published	2006-11-03
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: vilistextum

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

Am I affected?

Timeline

2006-11-03 00:07 UTCPublished CVE record published
2026-06-16 22:31 UTCUpdated Record last modified

vilistextum vilistextum DOWNGRADE

Affected: 2.6.6 · 2.6.7

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.6.6

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.6.6 (Debian / Ubuntu)

apt-cache madison vilistextum sudo apt install vilistextum=<VERSION_BEFORE_2.6.6> sudo apt-mark hold vilistextum

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

dnf --showduplicates list vilistextum sudo dnf downgrade vilistextum-<VERSION_BEFORE_2.6.6> sudo dnf versionlock add vilistextum

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-2006-5656?

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

Is CVE-2006-5656 being exploited?

CVE-2006-5656 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-2006-5656 affect?

CVE-2006-5656 affects vilistextum. Severity is medium (CVSS 5.0). Memory leak in the push_align function in src/util.c in Vilistextum before 2.6.9 allows remote attackers to cause a denial of service (memory consumption) via unspecified vectors related to the tmp_align variable. NOTE: it is not clear whe

How urgent is CVE-2006-5656?

Priority 36/100. No elevated risk signals yet.

Related CVEs

CVE-2006-5657 HIGH 10.0 UPGRADE Multiple off-by-one errors in src/text.c in Vilistextum before 2.6.9 have unknown impact and attack vectors.
CVE-2004-1299 HIGH 10.0 DOWNGRADE Buffer overflow in the get_attr function in html.c for vilistextum 2.6.6 allows remote attackers to execute ar

References

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