How severe is CVE-2008-6658?

CVE-2008-6658 has a CVSS 2.0 base score of 4.0, rated medium severity.

Is CVE-2008-6658 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-6658?

CVE-2008-6658 primarily affects Simple Machines Simple Machines Forum. In total, 14 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-6658?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2008-6658 published?

CVE-2008-6658 was published on 2009-04-07 and last updated on 2026-06-16.

CVE-2008-6658

CVE-2008-6658 is a medium-severity vulnerability in Simple Machines Simple Machines Forum with a CVSS 2.0 base score of 4.0. 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-22.

Key facts

Severity: Medium (CVSS 2.0 base score 4.0)
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Simple Machines Simple Machines Forum
Published: 2009-04-07
Last modified: 2026-06-16

Description

Directory traversal vulnerability in index.php in Simple Machines Forum (SMF) 1.0 before 1.0.15 and 1.1 before 1.1.7 allows remote authenticated administrators to install packages from arbitrary directories via a .. (dot dot) in the package parameter during an install2 action, as demonstrated by a predictable package filename in attachments/ that was uploaded through a post2 action to index.php.

Frequently asked questions

What is CVE-2008-6658?: Directory traversal vulnerability in index.php in Simple Machines Forum (SMF) 1.0 before 1.0.15 and 1.1 before 1.1.7 allows remote authenticated administrators to install packages from arbitrary directories via a .. (dot dot) in the package parameter during an install2 action, as demonstrated by a predictable package filename in attachments/ that was uploaded through a post2 action to index.php.
How severe is CVE-2008-6658?: CVE-2008-6658 has a CVSS 2.0 base score of 4.0, rated medium severity.
Is CVE-2008-6658 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-6658?: CVE-2008-6658 primarily affects Simple Machines Simple Machines Forum. In total, 14 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2008-6658?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2008-6658 published?: CVE-2008-6658 was published on 2009-04-07 and last updated on 2026-06-16.

References

Affected products (14)

cpe:2.3:a:simple_machines:simple_machines_forum:1.0.5:*:*:*:*:*:*:*
cpe:2.3:a:simple_machines:simple_machines_forum:1.0.6:*:*:*:*:*:*:*
cpe:2.3:a:simple_machines:simple_machines_forum:1.0.7:*:*:*:*:*:*:*
cpe:2.3:a:simple_machines:simple_machines_forum:1.0.11:*:*:*:*:*:*:*
cpe:2.3:a:simple_machines:simple_machines_forum:1.0.12:*:*:*:*:*:*:*
cpe:2.3:a:simple_machines:simple_machines_forum:1.1.1:*:*:*:*:*:*:*
cpe:2.3:a:simple_machines:simple_machines_forum:1.1.2:*:*:*:*:*:*:*
cpe:2.3:a:simple_machines:simple_machines_forum:1.1.3:*:*:*:*:*:*:*
cpe:2.3:a:simple_machines:simple_machines_forum:1.1.4:*:*:*:*:*:*:*
cpe:2.3:a:simple_machines:simple_machines_forum:1.1.5:*:*:*:*:*:*:*
cpe:2.3:a:simple_machines:simple_machines_forum:1.1.6:*:*:*:*:*:*:*
cpe:2.3:a:simple_machines:simple_machines_forum:1.1_rc1:*:*:*:*:*:*:*
cpe:2.3:a:simple_machines:simple_machines_forum:1.1_rc2:*:*:*:*:*:*:*
cpe:2.3:a:simple_machines:simple_machines_forum:1.1_rc3:*:*:*:*:*:*:*

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