CVE Tools
Sign in

CVE-2011-2895

Published: Aug 19, 2011Updated: Apr 29, 2026 Sources: CVE List NVD BDUCWE-119
9.3CRITICAL
NVD MITRE
EPSS Score
8.4%
Top 5.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

The LZW decompressor in (1) the BufCompressedFill function in fontfile/decompress.c in X.Org libXfont before 1.4.4 and (2) compress/compress.c in 4.3BSD, as used in zopen.c in OpenBSD before 3.8, FreeBSD, NetBSD 4.0.x and 5.0.x before 5.0.3 and 5.1.x before 5.1.1, FreeType 2.1.9, and other products, does not properly handle code words that are absent from the decompression table when encountered, which allows context-dependent attackers to trigger an infinite loop or a heap-based buffer overflow, and possibly execute arbitrary code, via a crafted compressed stream, a related issue to CVE-2006-1168 and CVE-2011-2896.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:MAu:NC:CI:CA:C
Exploitability
AV:NAccess Vector
Network
AC:MAccess Complexity
Medium
Au:NAuthentication
None
Impact
C:CConfidentiality
Complete
I:CIntegrity
Complete
A:CAvailability
Complete
Open in CVSS calculator →

Weaknesses

CWE-119

Affected Products

freetype
oss-project
freetypeLibraryLibrary
OSS Libraries / generic-library
x
oss-project·USaka x11 libraries, x.org, x11, libx11
libxfontMixed
OSS Libraries / generic-library
freebsd
oss-project·US
freebsdOn-premOS
Operating Systems / unix-bsd
netbsd
oss-project·US
netbsdOn-premOS
Operating Systems / unix-bsd
openbsd
oss-project·CA
openbsdOn-premOS
Operating Systems / unix-bsd
Novell Inc.
commercial·US
SUSE Linux EnterpriseOn-prem
Operating Systems / linux-distro
and 1 more affected products View all →

Exploitability

Official Patch Available
Is your org exposed to CVE-2011-2895?We can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

http://cgit.freedesktop.org/xorg/lib/libXfont/commit/?id=d11ee5886e9d9ec610051a206b135a4cdc1e09a0
cgit.freedesktop.org
http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2011-007.txt.asc
ftp.netbsd.org
http://lists.apple.com/archives/security-announce/2012/Feb/msg00000.html
lists.apple.com
and 35 more references View all →

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2011-2895 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows