CVE-2006-4336
HIGHEPSS 93th pctlDescription
Buffer underflow in the build_tree function in unpack.c in gzip 1.3.5 allows context-dependent attackers to execute arbitrary code via a crafted leaf count table that causes a write to a negative index.
How to fix
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v2 Vector
No CVSS vector data available.
Exploit Intelligence
High risk: more likely to be exploited than 93% of all known CVEs.
References
- bugzilla.redhat.com
- docs.info.apple.com
- lists.apple.com
- secunia.com
- secunia.com
- secunia.com
- secunia.com
- secunia.com
- secunia.com
- secunia.com
- secunia.com
- secunia.com
- secunia.com
- secunia.com
- secunia.com
- secunia.com
- secunia.com
- security.freebsd.org
- security.gentoo.org
- securitytracker.com
- slackware.com
- sunsolve.sun.com
- support.avaya.com
- gentoo.org
- mandriva.com
- novell.com
- openpkg.org
- redhat.com
- securityfocus.com
- securityfocus.com
- securityfocus.com
- securityfocus.com
- securityfocus.com
- securityfocus.com
- trustix.org
- ubuntu.com
- us.debian.org
- vmware.com
- vupen.com
- vupen.com
- vupen.com
- vupen.com
Related Vulnerabilities
Other vulnerabilities affecting gzip, ordered by exploit likelihood.
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2006-4337 | High | 7.5 | 6.0% | - | Fix |
| CVE-2006-4335 | High | 7.5 | 5.8% | - | Fix |
| CVE-2022-1271 | High | 8.8 | 4.3% | - | Fix |
| CVE-2009-2624 | Medium | 6.8 | 4.2% | - | Fix |
| CVE-2006-4334 | Medium | 5.0 | 4.1% | - | Fix |
| CVE-2006-4338 | Medium | 5.0 | 3.8% | - | Fix |
Common questions
How do I fix CVE-2006-4336?
Upgrade gzip on debian 11 to 1.3.5-15 or later.
Is CVE-2006-4336 being actively exploited?
Not that we know of. CVE-2006-4336 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 5.9% is the estimated probability that it will be exploited in the next 30 days. That is higher than 93% of all scored CVEs.
How severe is CVE-2006-4336?
CVE-2006-4336 has a CVSS v2 base score of 7.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2006-4336 affect?
Published advisories record a fix for gzip (Debian). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-16.