How severe is CVE-2008-6544?

CVE-2008-6544 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2008-6544 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-6544?

CVE-2008-6544 affects Simple Machines Simple Machines Forum. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2008-6544?

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

When was CVE-2008-6544 published?

CVE-2008-6544 was published on 2009-03-30 and last updated on 2026-06-16.

CVE-2008-6544

CVE-2008-6544 is a high-severity vulnerability in Simple Machines Simple Machines Forum with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-94.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 3% (85th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Simple Machines Simple Machines Forum
Published: 2009-03-30
Last modified: 2026-06-16

Description

Multiple PHP remote file inclusion vulnerabilities in Simple Machines Forum (SMF) 1.1.4 allow remote attackers to execute arbitrary PHP code via a URL in the (1) settings[default_theme_dir] parameter to Sources/Subs-Graphics.php and (2) settings[default_theme_dir] parameter to Sources/Themes.php. NOTE: CVE and multiple third parties dispute this issue because the files contain a protection mechanism against direct request

Frequently asked questions

What is CVE-2008-6544?: Multiple PHP remote file inclusion vulnerabilities in Simple Machines Forum (SMF) 1.1.4 allow remote attackers to execute arbitrary PHP code via a URL in the (1) settings[default_theme_dir] parameter to Sources/Subs-Graphics.php and (2) settings[default_theme_dir] parameter to Sources/Themes.php. NOTE: CVE and multiple third parties dispute this issue because the files contain a protection mechanism against direct request
How severe is CVE-2008-6544?: CVE-2008-6544 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2008-6544 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-6544?: CVE-2008-6544 affects Simple Machines Simple Machines Forum. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2008-6544?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2008-6544 published?: CVE-2008-6544 was published on 2009-03-30 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:simple_machines:simple_machines_forum:1.1.4:*:*:*:*:*:*:*

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CVE-2007-3308 — High (CVSS 7.5): Simple Machines Forum (SMF) 1.1.2 uses a concatenation method with insufficient randomization when creating a WAV file…
CVE-2006-7013 — High (CVSS 7.5): QueryString.php in Simple Machines Forum (SMF) 1.0.7 and earlier, and 1.1rc2 and earlier, allows remote attackers to…

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