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NVD / CVE Program· CNA mitre

CVE-2003-0730: Multiple integer overflows in the font libraries for XFree86 4.3.0 allow local or remote attackers to cause a denial of service or execute…

HighCVSS 7.5 · v2.0—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 32/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 5.8% (FIRST EPSS); higher than 93.3% of all records.
  • No special conditions are required; it is repeatable.
  • Fixed version: xfree86 (Debian:3.0) 4.1.0-16woody1.

Low priority for now. Upgrade to xfree86 (Debian:3.0) 4.1.0-16woody1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Multiple integer overflows in the font libraries for XFree86 4.3.0 allow local or remote attackers to cause a denial of service or execute arbitrary code via heap-based and stack-based buffer overflow attacks.

Published
Oct 20, 2003
Updated
Jun 16, 2026
EPSS
5.8% · 93th percentile
CWE
—

Report tools

JSON

Action score

32

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
2 / 30 · 5.8%

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  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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When you'll hear from us

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  • when exploit code appears or is weaponized
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  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
xfree86 projectx11r6
netbsdnetbsd

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • netbsd netbsd1.5
  • netbsd netbsd1.5.1
  • netbsd netbsd1.5.2
  • netbsd netbsd1.5.3
  • netbsd netbsd1.6
  • netbsd netbsd1.6.1
  • xfree86 project x11r64.2.1
  • xfree86 project x11r64.3.0

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:3.0xfree86before 4.1.0-16woody14.1.0-16woody1

Same product

xfree86 project: all records

Other highest-scoring records for the same primary product.

  • CVE-2004-0084Buffer overflow in the ReadFontAlias function in XFree86 4.1.0 to 4.3.0, when using the CopyISOLatin1Lowered function, allows local or…
    47Plan
  • CVE-2004-0083Buffer overflow in ReadFontAlias from dirfile.c of XFree86 4.1.0 through 4.3.0 allows local users and remote attackers to execute arbitrary…
    46Plan
  • CVE-2002-1510xdm, with the authComplain variable set to false, allows arbitrary attackers to connect to the X server if the xdm auth directory does not…
    41Plan

Published before and after this one in the same product

  • ← EarlierCVE-2003-0063Mar 3, 2003 · The xterm terminal emulator in XFree86 4.2.0 and earlier allows attackers to modify the window title via a certain character escape…
    30Monitor
  • ← EarlierCVE-2003-0071Mar 3, 2003 · The DEC UDK processing feature in the xterm terminal emulator in XFree86 4.2.99.4 and earlier allows attackers to cause a denial of service…
    8Monitor
  • Later →CVE-2004-0106Mar 3, 2004 · Multiple unknown vulnerabilities in XFree86 4.1.0 to 4.3.0, related to improper handling of font files, a different set of vulnerabilities…
    28Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:xfree864.1.0-16woody1 · Debian:3.0Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • No special conditions are required; it is repeatable.

If successful

Confidentiality
P · data can be read
Integrity
P · data or configuration can be modified
Availability
P · the service can be disrupted
Attack complexity
Low
Confidentiality impact
P
Integrity impact
P
Availability impact
P

Weakness class (CWE)

—

CVSS vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

References

Show all references (15 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records