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Vulnerability Assessment

Weakness
CWE
CWE-17
Impact

CVSS score of 7.5 (HIGH). Attack characteristics: network attack vector, low complexity. EPSS exploitation probability: 2.56%.
Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the high-severity affected system.
This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 2.6% exploitation probability (EPSS)

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AnalysisAI

The Regular Expressions package in International Components for Unicode (ICU) 52 before SVN revision 292944, as used in Google Chrome before 40.0.2214.91, allows remote attackers to cause a denial of. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

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Technical ContextAI · show details

This vulnerability is classified under CWE-17. The Regular Expressions package in International Components for Unicode (ICU) 52 before SVN revision 292944, as used in Google Chrome before 40.0.2214.91, allows remote attackers to cause a denial of service (memory corruption) or possibly have unspecified other impact via vectors related to a look-behind expression. Affected products include: Redhat Enterprise Linux Desktop Supplementary, Redhat Enterprise Linux Server Supplementary, Redhat Enterprise Linux Server Supplementary Eus, Redhat Enterprise Linux Workstation Supplementary, Opensuse. Version information: before 40.0.2214.91.

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  • Exploit and PoC references, threat intelligence from 22 sources
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Severity by source

NVD PRIMARY 7.5 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Confidentiality
P
Integrity
P
Availability
P

DescriptionCVE.org

The Regular Expressions package in International Components for Unicode (ICU) 52 before SVN revision 292944, as used in Google Chrome before 40.0.2214.91, allows remote attackers to cause a denial of service (memory corruption) or possibly have unspecified other impact via vectors related to a look-behind expression.

Threat Intelligence Overview

EPSS Score
2.6%
Top 14% exploitable
Data Quality
3 sources
Confidence: Low
NVD CVE.org EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 2.6%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

41
Low Medium High Critical
KEV: 0
EPSS: +3
CVSS: +38
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Buffer Overflow HIGH

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

Denial of Service MEDIUM

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

Affected Products (CPE)CVE.org

cpe:2.3:o:redhat:enterprise_linux_desktop_supplementary:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_supplementary:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_supplementary_eus:6.6.z:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_workstation_supplementary:6.0:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*
cpe:2.3:a:icu-project:international_components_for_unicode:*:*:*:*:*:c\/c\+\+:*:*
cpe:2.3:a:oracle:communications_messaging_server:7.0.5:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_messaging_server:8.0:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.10:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*

More in International Components For Unicode

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CVE-2014-8147 HIGH POC
7.5 May 25

The resolveImplicitLevels function in common/ubidi.c in the Unicode Bidirectional Algorithm implementation in ICU4C in I
CVE-2014-8146 HIGH POC
7.5 May 25

The resolveImplicitLevels function in common/ubidi.c in the Unicode Bidirectional Algorithm implementation in ICU4C in I
CVE-2017-17484 CRITICAL POC
9.8 Dec 10

The ucnv_UTF8FromUTF8 function in ucnv_u8.cpp in International Components for Unicode (ICU) for C/C++ through 60.1 misha
CVE-2016-6293 CRITICAL POC
9.8 Jul 25

The uloc_acceptLanguageFromHTTP function in common/uloc.cpp in International Components for Unicode (ICU) through 57.1 f
CVE-2016-7415 CRITICAL POC
9.8 Sep 17

Stack-based buffer overflow in the Locale class in common/locid.cpp in International Components for Unicode (ICU) throug
CVE-2017-14952 CRITICAL
9.8 Oct 16

Double free in i18n/zonemeta.cpp in International Components for Unicode (ICU) for C/C++ through 59.1 allows remote atta
CVE-2018-18928 CRITICAL
9.8 Nov 04

International Components for Unicode (ICU) for C/C++ 63.1 has an integer overflow in number::impl::DecimalQuantity::toSc
CVE-2015-5922 CRITICAL
10.0 Oct 09

Unspecified vulnerability in International Components for Unicode (ICU) before 53.1.0, as used in Apple OS X before 10.1
CVE-2014-9911 CRITICAL
9.8 Jan 04

Stack-based buffer overflow in the ures_getByKeyWithFallback function in common/uresbund.cpp in International Components
CVE-2014-9654 CRITICAL
9.8 Apr 24

The Regular Expressions package in International Components for Unicode (ICU) for C/C++ before 2014-12-03, as used in Go
CVE-2020-10531 HIGH
8.8 Mar 12

An issue was discovered in International Components for Unicode (ICU) for C/C++ through 66.1. Rated high severity (CVSS

CVE-2025-5222 HIGH
7.0 May 27

A stack buffer overflow was found in Internationl components for unicode (ICU ). Rated high severity (CVSS 7.0), this vu

Same weakness CWE-17 – DEPRECATED: Code

View all
CVE-2015-0240 CRITICAL POC
10.0
CVE-2014-9222 CRITICAL POC
10.0
CVE-2014-9707 HIGH POC
7.5
CVE-2015-3292 CRITICAL POC
10.0
CVE-2015-2682 MEDIUM POC
5.0
CVE-2015-4335 CRITICAL POC
10.0
CVE-2015-1728 CRITICAL
9.3
CVE-2014-9296 MEDIUM POC
5.0

Same technique Buffer Overflow

View all
CVE-2017-7269 CRITICAL POC
9.8
CVE-2015-5119 CRITICAL POC
9.8
CVE-2015-3113 CRITICAL POC
9.8
CVE-2011-2462 CRITICAL POC
9.8
CVE-2020-0796 CRITICAL POC
10.0
CVE-2019-11043 CRITICAL POC
9.8
CVE-2009-0927 HIGH POC
8.8
CVE-2012-1889 HIGH POC
8.8

References

Advisories & patches
REF http://advisories.mageia.org/MGASA-2015-0047.html REF http://bugs.icu-project.org/trac/ticket/11370 REF http://googlechromereleases.blogspot.com/2015/01/stable-update.html REF http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00005.html REF http://rhn.redhat.com/errata/RHSA-2015-0093.html REF http://secunia.com/advisories/62383 REF http://secunia.com/advisories/62575 REF http://secunia.com/advisories/62665 REF http://security.gentoo.org/glsa/glsa-201502-13.xml REF http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html REF http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html REF http://www.securityfocus.com/bid/72288 REF http://www.securitytracker.com/id/1031623 REF http://www.ubuntu.com/usn/USN-2476-1 REF https://chromium.googlesource.com/chromium/deps/icu52/+/3af4ce5982311035e5f36803d547c0befa576c8c REF https://chromium.googlesource.com/chromium/deps/icu52/+/6242e2fbb36f486f2c0addd1c3cef67fc4ed33fb REF https://code.google.com/p/chromium/issues/detail?id=430353 REF https://codereview.chromium.org/726973003 REF https://security.gentoo.org/glsa/201503-06 REF https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html

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