How severe is CVE-2001-1159?

CVE-2001-1159 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2001-1159 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-2001-1159?

CVE-2001-1159 primarily affects Squirrelmail. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2001-1159?

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-2001-1159 published?

CVE-2001-1159 was published on 2001-07-02 and last updated on 2026-06-16.

CVE-2001-1159

CVE-2001-1159 is a high-severity vulnerability in Squirrelmail 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.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 4% (88th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Squirrelmail
Published: 2001-07-02
Last modified: 2026-06-16

Description

load_prefs.php and supporting include files in SquirrelMail 1.0.4 and earlier do not properly initialize certain PHP variables, which allows remote attackers to (1) view sensitive files via the config_php and data_dir options, and (2) execute arbitrary code by using options_order.php to upload a message that could be interpreted as PHP.

Frequently asked questions

What is CVE-2001-1159?: load_prefs.php and supporting include files in SquirrelMail 1.0.4 and earlier do not properly initialize certain PHP variables, which allows remote attackers to (1) view sensitive files via the config_php and data_dir options, and (2) execute arbitrary code by using options_order.php to upload a message that could be interpreted as PHP.
How severe is CVE-2001-1159?: CVE-2001-1159 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2001-1159 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-2001-1159?: CVE-2001-1159 primarily affects Squirrelmail. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2001-1159?: 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-2001-1159 published?: CVE-2001-1159 was published on 2001-07-02 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:squirrelmail:squirrelmail:1.0.4:*:*:*:*:*:*:*
cpe:2.3:a:squirrelmail:squirrelmail:1.0.5:*:*:*:*:*:*:*

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