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CVE-2006-4336

21
FAUCET Score

CVE-2006-4336 describes a buffer underflow vulnerability in gzip version 1.3.5, specifically within the build_tree function in unpack.c. This flaw allows unauthenticated, remote attackers to execute arbitrary code by supplying a specially crafted leaf count table that leads to a write to a negative memory index. With a CVSS score of 7.5, this vulnerability is considered high severity, indicating potential for partial confidentiality, integrity, and availability impact with low attack complexity. Despite its age and severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
1.3.5CPE matchmatch criteria
cpe:2.3:a:gzip:gzip:1.3.5:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

AV:N/AC:L/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
5.51%
Probability of exploitation in next 30 days
EPSS Percentile
92.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0551 is in the 86th percentile among its peer group of 51,485 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 3Fixed in: gzip-0:1.3.3-13.rhel3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: gzip-0:1.3.3-16.rhel4
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: lha

Vendor Advisories (1)

redhatCVE-2006-4336Low

multiple vulnerabilities in lha

Dec 2, 2006

References

patches.sgi.com / support/free/security/advisories/20061001-01-P.asc
bugzilla.redhat.com / bugzilla/show_bug.cgi
docs.info.apple.com / article.html
lists.apple.com / archives/security-announce/2006/Nov/msg00001.html
secunia.com / advisories/21996
secunia.com / advisories/22002
secunia.com / advisories/22009
Vendor Advisory
secunia.com / advisories/22012
PatchVendor Advisory
secunia.com / advisories/22017
Vendor Advisory
secunia.com / advisories/22027
secunia.com / advisories/22033
Vendor Advisory
secunia.com / advisories/22034
Vendor Advisory
secunia.com / advisories/22043
PatchVendor Advisory
secunia.com / advisories/22085
secunia.com / advisories/22101
secunia.com / advisories/22435
secunia.com / advisories/22487
secunia.com / advisories/22661
secunia.com / advisories/23153
secunia.com / advisories/23155
secunia.com / advisories/23156
secunia.com / advisories/23679
secunia.com / advisories/24435
secunia.com / advisories/24636
security.freebsd.org / advisories/FreeBSD-SA-06:21.gzip.asc
security.gentoo.org / glsa/glsa-200609-13.xml
securitytracker.com / id
exchange.xforce.ibmcloud.com / vulnerabilities/29042
issues.rpath.com / browse/RPL-615
slackware.com / security/viewer.php
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10140
sunsolve.sun.com / search/document.do
support.avaya.com / elmodocs2/security/ASA-2006-218.htm
gentoo.org / security/en/glsa/glsa-200611-24.xml
kb.cert.org / vuls/id/554780
US Government Resource
mandriva.com / security/advisories
novell.com / linux/security/advisories/2006_56_gzip.html
openpkg.org / security/advisories/OpenPKG-SA-2006.020-gzip.html
redhat.com / support/errata/RHSA-2006-0667.html
securityfocus.com / archive/1/446426/100/0/threaded
securityfocus.com / archive/1/450078/100/0/threaded
securityfocus.com / archive/1/451324/100/0/threaded
securityfocus.com / archive/1/462007/100/0/threaded
securityfocus.com / archive/1/464268/100/0/threaded
securityfocus.com / bid/20101
trustix.org / errata/2006/0052
ubuntu.com / usn/usn-349-1
us-cert.gov / cas/techalerts/TA06-333A.html
US Government Resource
us.debian.org / security/2006/dsa-1181
vmware.com / support/esx25/doc/esx-254-200702-patch.html
vupen.com / english/advisories/2006/3695
vupen.com / english/advisories/2006/4275
vupen.com / english/advisories/2006/4750
vupen.com / english/advisories/2006/4760
vupen.com / english/advisories/2007/0092
vupen.com / english/advisories/2007/0832
vupen.com / english/advisories/2007/1171