High 9.3Published Aug 19, 2011

CVE-2011-2895The 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, Fre…

Updated under an hour ago (Nov 2, 2026, 12:10 AM ET)

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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.

CVSS: 9.3 HIGH (v2.0, NVD)AV:N/AC:M/Au:N/C:C/I:C/A:C
Weakness (CWE): CWE-119
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 16, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

freetype freetype freetype:freetype	2.1.9	NVD
x libxfont x:libxfont	through 1.4.3; 1.2.0; 1.2.1; 1.2.2; 1.2.3; 1.2.4; 1.2.5; 1.2.6; and 11 more ranges	NVD
freebsd freebsd freebsd:freebsd	all versions	NVD
netbsd netbsd netbsd:netbsd	all versions	NVD
openbsd openbsd openbsd:openbsd	through 3.7; 2.0; 2.1; 2.2; 2.3; 2.4; 2.5; 2.6; and 10 more ranges	NVD

References

References

http://cgit.freedesktop.org/xorg/lib/libXfont/commit/?id=d11ee5886e9d9ec610051a206b135a4cdc1e09a0	patch
http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2011-007.txt.asc
http://lists.apple.com/archives/security-announce/2012/Feb/msg00000.html
http://lists.apple.com/archives/security-announce/2012/May/msg00001.html
http://lists.apple.com/archives/security-announce/2015/Dec/msg00000.html
http://lists.apple.com/archives/security-announce/2015/Dec/msg00001.html
http://lists.apple.com/archives/security-announce/2015/Dec/msg00002.html
http://lists.apple.com/archives/security-announce/2015/Dec/msg00005.html
http://lists.freedesktop.org/archives/xorg-announce/2011-August/001721.html	patch
http://lists.freedesktop.org/archives/xorg-announce/2011-August/001722.html	patch
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The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.