Is CVE-2007-4771 being actively exploited?

CVE-2007-4771 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2007-4771?

CVE-2007-4771 has a CVSS 2.0 base score of 9.3 (HIGH).

CVE-2007-4771

HIGH · CVSS 9.3EPSS 2.5%EU EUVD

Heap-based buffer overflow in the doInterval function in regexcmp.cpp in libicu in International Components for Unicode (ICU) 3.8.1 and earlier allows context-dependent attackers to cause a denial of service (memory consumption) and possibly have unspecified other impact via a regular expression that writes a large amount of data to the backtracking stack. NOTE: some of these details are obtained from third party information.

Key facts

CVSS score: 9.3 (v2.0)
Severity: HIGH
CVSS vector: AV:N/AC:M/Au:N/C:C/I:C/A:C
Weakness (CWE): CWE-399
EPSS score: 2.5% (85th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2007-4752)
Published: January 29, 2008
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2007-4752 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://lists.opensuse.org/opensuse-security-announce/2008-03/msg00001.html(Third Party Advisory)
http://rhn.redhat.com/errata/RHSA-2008-0090.html(Third Party Advisory)
http://secunia.com/advisories/28575(Permissions Required)
http://secunia.com/advisories/28615(Permissions Required)
http://secunia.com/advisories/28669(Permissions Required)
http://secunia.com/advisories/28783(Permissions Required)
http://secunia.com/advisories/29194(Permissions Required)
http://secunia.com/advisories/29242(Permissions Required)
http://secunia.com/advisories/29291(Permissions Required)
http://secunia.com/advisories/29294(Permissions Required)
http://secunia.com/advisories/29333(Permissions Required)
http://secunia.com/advisories/29852(Permissions Required)
http://secunia.com/advisories/29910(Permissions Required)
http://secunia.com/advisories/29987(Permissions Required)
http://secunia.com/advisories/30179(Permissions Required)
http://security.gentoo.org/glsa/glsa-200803-20.xml(Third Party Advisory)
http://security.gentoo.org/glsa/glsa-200805-16.xml(Third Party Advisory)
http://securitytracker.com/id?1019269(Third Party Advisory, VDB Entry)
http://sourceforge.net/mailarchive/message.php?msg_name=d03a2ffb0801221538x68825e42xb4a4aaf0fcccecbd%40mail.gmail.com(Third Party Advisory)
http://sunsolve.sun.com/search/document.do?assetkey=1-26-231641-1(Broken Link)
http://sunsolve.sun.com/search/document.do?assetkey=1-26-233922-1(Broken Link)
http://wiki.rpath.com/wiki/Advisories:rPSA-2008-0043(Third Party Advisory)
http://www.debian.org/security/2008/dsa-1511(Third Party Advisory)
http://www.mandriva.com/security/advisories?name=MDVSA-2008:026(Broken Link)
http://www.novell.com/linux/security/advisories/2008_23_openoffice.html(Third Party Advisory)
http://www.openoffice.org/security/cves/CVE-2007-4770.html(Third Party Advisory)
http://www.openoffice.org/security/cves/CVE-2007-5745.html(Third Party Advisory)
http://www.securityfocus.com/archive/1/487677/100/0/threaded
http://www.securityfocus.com/bid/27455(Patch, Third Party Advisory, VDB Entry)
http://www.ubuntu.com/usn/usn-591-1(Third Party Advisory)
http://www.vupen.com/english/advisories/2008/0282(Third Party Advisory)
http://www.vupen.com/english/advisories/2008/0807/references(Third Party Advisory)
http://www.vupen.com/english/advisories/2008/1375/references(Third Party Advisory)
https://bugzilla.redhat.com/show_bug.cgi?id=429025(Issue Tracking, Third Party Advisory)
https://exchange.xforce.ibmcloud.com/vulnerabilities/39936(Third Party Advisory, VDB Entry)
https://issues.rpath.com/browse/RPL-2199(Third Party Advisory)
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10507(Third Party Advisory)
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5431(Third Party Advisory)
https://www.redhat.com/archives/fedora-package-announce/2008-January/msg00896.html(Third Party Advisory)
https://www.redhat.com/archives/fedora-package-announce/2008-January/msg00921.html(Third Party Advisory)

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

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