How severe is CVE-2007-2223?

CVE-2007-2223 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2007-2223 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 49% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-2223?

CVE-2007-2223 primarily affects Microsoft Xml Core Services. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2007-2223?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2007-2223 published?

CVE-2007-2223 was published on 2007-08-14 and last updated on 2026-06-16.

CVE-2007-2223

CVE-2007-2223 is a critical-severity vulnerability in Microsoft Xml Core Services with a CVSS 2.0 base score of 9.3. Its EPSS exploit-prediction score of 49% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-119.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 49% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Microsoft Xml Core Services
Published: 2007-08-14
Last modified: 2026-06-16

Description

Microsoft XML Core Services (MSXML) 3.0 through 6.0 allows remote attackers to execute arbitrary code via the substringData method on a (1) TextNode or (2) XMLDOM object, which causes an integer overflow that leads to a buffer overflow.

Frequently asked questions

What is CVE-2007-2223?: Microsoft XML Core Services (MSXML) 3.0 through 6.0 allows remote attackers to execute arbitrary code via the substringData method on a (1) TextNode or (2) XMLDOM object, which causes an integer overflow that leads to a buffer overflow.
How severe is CVE-2007-2223?: CVE-2007-2223 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2007-2223 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 49% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-2223?: CVE-2007-2223 primarily affects Microsoft Xml Core Services. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2007-2223?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2007-2223 published?: CVE-2007-2223 was published on 2007-08-14 and last updated on 2026-06-16.

References

Affected products (4)

cpe:2.3:a:microsoft:xml_core_services:3.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:xml_core_services:4.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:xml_core_services:6.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:xml_core_services:5.0:*:*:*:*:*:*:*

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