How severe is CVE-2009-4645?

CVE-2009-4645 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2009-4645 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-4645?

CVE-2009-4645 primarily affects Accellion Secure File Transfer Appliance. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-4645?

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-2009-4645 published?

CVE-2009-4645 was published on 2010-02-19 and last updated on 2026-06-16.

CVE-2009-4645

CVE-2009-4645 is a high-severity vulnerability in Accellion Secure File Transfer Appliance with a CVSS 2.0 base score of 7.8. 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: High (CVSS 2.0 base score 7.8)
EPSS exploit prediction: 3% (84th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Accellion Secure File Transfer Appliance
Published: 2010-02-19
Last modified: 2026-06-16

Description

Directory traversal vulnerability in web_client_user_guide.html in Accellion Secure File Transfer Appliance before 8_0_105 allows remote attackers to read arbitrary files via a .. (dot dot) in the lang parameter.

Frequently asked questions

What is CVE-2009-4645?: Directory traversal vulnerability in web_client_user_guide.html in Accellion Secure File Transfer Appliance before 8_0_105 allows remote attackers to read arbitrary files via a .. (dot dot) in the lang parameter.
How severe is CVE-2009-4645?: CVE-2009-4645 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2009-4645 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-4645?: CVE-2009-4645 primarily affects Accellion Secure File Transfer Appliance. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-4645?: 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-2009-4645 published?: CVE-2009-4645 was published on 2010-02-19 and last updated on 2026-06-16.

References

Affected products (5)

cpe:2.3:h:accellion:secure_file_transfer_appliance:7_0_135:*:*:*:*:*:*:*
cpe:2.3:h:accellion:secure_file_transfer_appliance:7_0_178:*:*:*:*:*:*:*
cpe:2.3:h:accellion:secure_file_transfer_appliance:7_0_189:*:*:*:*:*:*:*
cpe:2.3:h:accellion:secure_file_transfer_appliance:7_0_259:*:*:*:*:*:*:*
cpe:2.3:h:accellion:secure_file_transfer_appliance:7_0_296:*:*:*:*:*:*:*

More vulnerabilities in Accellion Secure File Transfer Appliance

CVE-2009-4646 — Critical (CVSS 9.0): Static code injection vulnerability in the administrative web interface in Accellion Secure File Transfer Appliance…
CVE-2009-4644 — Critical (CVSS 9.0): Accellion Secure File Transfer Appliance before 8_0_105 allows remote authenticated administrators to bypass the…
CVE-2008-7012 — High (CVSS 7.8): courier/1000@/api_error_email.html (aka "error reporting page") in Accellion File Transfer Appliance FTA_7_0_178, and…
CVE-2009-4648 — High (CVSS 7.2): Accellion Secure File Transfer Appliance before 8_0_105 does not properly restrict access to sensitive commands and…
CVE-2009-4647 — Medium (CVSS 4.3): Cross-site scripting (XSS) vulnerability in Accellion Secure File Transfer Appliance before 7_0_296 allows remote…
CVE-2008-3850 — Medium (CVSS 4.3): Cross-site scripting (XSS) vulnerability in Accellion File Transfer FTA_7_0_135 allows remote attackers to inject…

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