Is CVE-2007-4770 in the CISA KEV catalog?

No. CVE-2007-4770 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2007-4770?

CVE-2007-4770 has a CVSS v2 base score of 6.8 (MEDIUM).

What is the EPSS score for CVE-2007-4770?

CVE-2007-4770 has an EPSS score of 2.82% (85th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2007-4770?

Upgrade icu on debian 11 to 3.8-6 or later.

CVE & CISA-KEV Catalog

CVE-2007-4770

MEDIUMEPSS 85th pctl

6.8

CVSS v2

NVD

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.

CWE-399Resource Management Errors

How to fix

Remediation Available

icuDebian

Fixed in:3.8-6CVE-2007-4770

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

2.82%probability of exploitation in 30 days

85thpercentile

Elevated risk: more likely to be exploited than 85% of all known CVEs.

References

Related Vulnerabilities

Other CWE-399 (Resource Management Errors) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2009-3103	High	10.0	90%	-	-
CVE-2009-0075	High	9.3	85%	-	-
CVE-2005-1790	Low	2.6	83%	-	-
CVE-2010-0806	High	8.8	82%	KEV	-
CVE-2009-2526	High	7.8	82%	-	-
CVE-2015-1868	High	7.8	82%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-23.