HOMEVULNERABILITIESCVE-2007-4770
MEDIUM

CVE-2007-4770

CWE-399Published: January 29, 2008· Updated: Jun 16, 2026

6.8
CVSS v3.1

Official Description

libicu in International Components for Unicode (ICU) 3.8.1 and earlier attempts to process backreferences to the nonexistent capture group zero (aka \0), which might allow context-dependent attackers to read from, or write to, out-of-bounds memory locations, related to corruption of REStackFrames.

NVD Source

Technical Analysis

CVE-2007-4770 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityM
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityP
IntegrityP
AvailabilityP
AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected Vendors & Products

icu-project1 product(s)
international components for unicode
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
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Official Patches & Advisories

All References (80)

Quick Facts

CVE IDCVE-2007-4770
CVSS Score6.8 / 10
SeverityMEDIUM
WeaknessCWE-399
CISA KEVNo
Affected1 vendor(s)
PublishedJan 29, 2008

Related CVEs (CWE-399)

Recommended Actions

  • Apply vendor patches immediately
  • Monitor CVE-2007-4770 in threat intel feeds
  • Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.