How severe is CVE-2003-0248?

CVE-2003-0248 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2003-0248 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2003-0248?

CVE-2003-0248 primarily affects Redhat Linux. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2003-0248?

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-2003-0248 published?

CVE-2003-0248 was published on 2003-06-16 and last updated on 2026-06-16.

CVE-2003-0248

CVE-2003-0248 is a critical-severity vulnerability in Redhat Linux with a CVSS 2.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 4% (88th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Redhat Linux
Published: 2003-06-16
Last modified: 2026-06-16

Description

The mxcsr code in Linux kernel 2.4 allows attackers to modify CPU state registers via a malformed address.

Frequently asked questions

What is CVE-2003-0248?: The mxcsr code in Linux kernel 2.4 allows attackers to modify CPU state registers via a malformed address.
How severe is CVE-2003-0248?: CVE-2003-0248 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2003-0248 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2003-0248?: CVE-2003-0248 primarily affects Redhat Linux. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2003-0248?: 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-2003-0248 published?: CVE-2003-0248 was published on 2003-06-16 and last updated on 2026-06-16.

References

Affected products (5)

cpe:2.3:o:redhat:linux:7.1:*:*:*:*:*:*:*
cpe:2.3:o:redhat:linux:7.2:*:*:*:*:*:*:*
cpe:2.3:o:redhat:linux:7.3:*:*:*:*:*:*:*
cpe:2.3:o:redhat:linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:linux:9.0:*:i386:*:*:*:*:*

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