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CVE-2011-1659

19
FAUCET Score

CVE-2011-1659 describes an integer overflow vulnerability in the GNU C Library (glibc) versions 2.13 and earlier, specifically within the fnmatch.c component. This flaw allows unauthenticated, remote attackers to trigger a denial of service (application crash) by supplying a long UTF8 string and a crafted pattern to an application utilizing the fnmatch function. While the CVSS score is 5.0, indicating a medium severity, the primary impact is limited to application availability. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.13CPE matchmatch criteria
cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:*
1.00CPE matchmatch criteria
cpe:2.3:a:gnu:glibc:1.00:*:*:*:*:*:*:*
1.01CPE matchmatch criteria
cpe:2.3:a:gnu:glibc:1.01:*:*:*:*:*:*:*
1.02CPE matchmatch criteria
cpe:2.3:a:gnu:glibc:1.02:*:*:*:*:*:*:*
1.03CPE matchmatch criteria
cpe:2.3:a:gnu:glibc:1.03:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.86%
Probability of exploitation in next 30 days
EPSS Percentile
85.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0286 is in the 79th percentile among its peer group of 23,705 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (4)

redhatpatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: glibc-0:2.3.4-2.57
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: glibc-0:2.5-58.el5_6.2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: glibc-0:2.12-1.7.el6_0.5
View patch

Vendor Advisories (1)

redhatCVE-2011-1659Low

glibc: fnmatch() alloca()-based memory corruption flaw

Aug 5, 2010

References

code.google.com / p/chromium/issues/detail
Exploit
bugzilla.redhat.com / show_bug.cgi
ExploitPatch
scarybeastsecurity.blogspot.com / 2011/02/i-got-accidental-code-execution-via.html
Exploit
secunia.com / advisories/44353
secunia.com / advisories/46397
exchange.xforce.ibmcloud.com / vulnerabilities/66819
sourceware.org / bugzilla/show_bug.cgi
ExploitPatch
sourceware.org / git
mandriva.com / security/advisories
mandriva.com / security/advisories
securityfocus.com / archive/1/520102/100/0/threaded
securitytracker.com / id
vmware.com / security/advisories/VMSA-2011-0012.html