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CVE-2007-4771

Heap-based buffer overflow in the doInterval function in regexcmp.cpp in libicu in International...

9.3 HighFix available

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.

Exploit likelihood

2.54%Down 0.1 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 9.3

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.

Record
CVE-2007-4771
CVSS 2.0
9.3 HighAV:N/AC:M/Au:N/C:C/I:C/A:C
Weakness
CWE-399
Updated
2026-11-02
CVE List No score

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.

Record
CVE-2007-4771
Updated
2026-11-02
EUVDEUVD-2007-4752 No score

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.

Record
EUVD-2007-4752
Updated
2026-11-03
GitHub AdvisoriesGHSA-78gp-g683-v26p No score

Heap-based buffer overflow in the doInterval function in regexcmp.cpp in libicu in International...

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.

Record
GHSA-78gp-g683-v26p
Updated
2026-11-02
OSV No score

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.

Record
CVE-2007-4771
Updated
2026-11-02
OSVDEBIAN-CVE-2007-4771 No score

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.

Record
DEBIAN-CVE-2007-4771
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
icu
Debian:12
 before 3.8-6
3.8-6
icu
Debian:13
 before 3.8-6
3.8-6
icu
Debian:14
 before 3.8-6
3.8-6
icu
Debian:4.0
From an advisory covering 2 CVEs
 before 3.6-2etch1, plus listed versions
3.6-2
3.6-2etch1
icu
Red Hat:enterprise_linux:5::client_workstation
From an advisory covering 2 CVEs
 before 0:3.6-5.11.1
0:3.6-5.11.1
icu-debuginfo
Red Hat:enterprise_linux:5::client_workstation
From an advisory covering 2 CVEs
 before 0:3.6-5.11.1
0:3.6-5.11.1
libicu-devel
Red Hat:enterprise_linux:5::client_workstation
From an advisory covering 2 CVEs
 before 0:3.6-5.11.1
0:3.6-5.11.1
icu
Red Hat:enterprise_linux:5::client
From an advisory covering 2 CVEs
 before 0:3.6-5.11.1
0:3.6-5.11.1
icu-debuginfo
Red Hat:enterprise_linux:5::client
From an advisory covering 2 CVEs
 before 0:3.6-5.11.1
0:3.6-5.11.1
libicu
Red Hat:enterprise_linux:5::client
From an advisory covering 2 CVEs
 before 0:3.6-5.11.1
0:3.6-5.11.1
Show 6 moreShow less
Affected packages
PackageAffectedFixed
libicu-doc
Red Hat:enterprise_linux:5::client
From an advisory covering 2 CVEs
 before 0:3.6-5.11.1
0:3.6-5.11.1
icu
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
 before 0:3.6-5.11.1
0:3.6-5.11.1
icu-debuginfo
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
 before 0:3.6-5.11.1
0:3.6-5.11.1
libicu
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
 before 0:3.6-5.11.1
0:3.6-5.11.1
libicu-devel
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
 before 0:3.6-5.11.1
0:3.6-5.11.1
libicu-doc
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
 before 0:3.6-5.11.1
0:3.6-5.11.1

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
aliases
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2007-4771 is a high vulnerability (CVSS 9.3) in Icu-project International Components For Unicode, published January 28, 2008. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.54%, the 85th percentile. Fixed in icu 3.8-6.

References

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