Is CVE-2011-4599 being actively exploited?

CVE-2011-4599 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2011-4599?

CVE-2011-4599 has a CVSS 2.0 base score of 7.5 (HIGH).

CVE-2011-4599

HIGH · CVSS 7.5EPSS 7.9%EU EUVD

Stack-based buffer overflow in the _canonicalize function in common/uloc.c in International Components for Unicode (ICU) before 49.1 allows remote attackers to execute arbitrary code via a crafted locale ID that is not properly handled during variant canonicalization.

Key facts

CVSS score: 7.5 (v2.0)
Severity: HIGH
CVSS vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness (CWE): CWE-119
EPSS score: 7.9% (95th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2011-4523)
Published: June 21, 2012
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2011-4523 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

icu-project / international components for unicode

References

http://bugs.icu-project.org/trac/ticket/8984(Issue Tracking, Vendor Advisory)
http://code.google.com/p/chromium/issues/detail?id=106441(Third Party Advisory)
http://lists.apple.com/archives/security-announce/2012/Sep/msg00003.html(Mailing List, Third Party Advisory)
http://lists.apple.com/archives/security-announce/2012/Sep/msg00004.html(Mailing List, Third Party Advisory)
http://lists.opensuse.org/opensuse-updates/2012-01/msg00035.html(Third Party Advisory)
http://rhn.redhat.com/errata/RHSA-2011-1815.html(Third Party Advisory)
http://secunia.com/advisories/47146(Permissions Required)
http://secunia.com/advisories/47227(Permissions Required)
http://secunia.com/advisories/47674(Permissions Required)
http://secunia.com/advisories/47714(Permissions Required)
http://secunia.com/advisories/47775(Permissions Required)
http://support.apple.com/kb/HT5501(Third Party Advisory)
http://support.apple.com/kb/HT5503(Third Party Advisory)
http://ubuntu.com/usn/usn-1348-1(Third Party Advisory)
http://www.debian.org/security/2012/dsa-2397(Third Party Advisory)
http://www.mandriva.com/security/advisories?name=MDVSA-2011:194(Third Party Advisory)
http://www.openwall.com/lists/oss-security/2011/12/09/2(Mailing List)
http://www.openwall.com/lists/oss-security/2011/12/09/5(Mailing List)
http://www.osvdb.org/77698(Broken Link)
http://www.securityfocus.com/bid/51006(Patch, Third Party Advisory, VDB Entry)
https://exchange.xforce.ibmcloud.com/vulnerabilities/71726(VDB Entry)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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