How severe is CVE-2009-4644?

CVE-2009-4644 has a CVSS 2.0 base score of 9.0, rated critical severity.

Is CVE-2009-4644 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-4644?

CVE-2009-4644 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-2009-4644?

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

When was CVE-2009-4644 published?

CVE-2009-4644 was published on 2010-02-19 and last updated on 2026-06-16.

CVE-2009-4644

CVE-2009-4644 is a critical-severity vulnerability in Accellion Secure File Transfer Appliance with a CVSS 2.0 base score of 9.0. 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-78.

Key facts

Severity: Critical (CVSS 2.0 base score 9.0)
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Accellion Secure File Transfer Appliance
Published: 2010-02-19
Last modified: 2026-06-16

Description

Accellion Secure File Transfer Appliance before 8_0_105 allows remote authenticated administrators to bypass the restricted shell and execute arbitrary commands via shell metacharacters to the ping command, as demonstrated by modifying the cli program.

Frequently asked questions

What is CVE-2009-4644?: Accellion Secure File Transfer Appliance before 8_0_105 allows remote authenticated administrators to bypass the restricted shell and execute arbitrary commands via shell metacharacters to the ping command, as demonstrated by modifying the cli program.
How severe is CVE-2009-4644?: CVE-2009-4644 has a CVSS 2.0 base score of 9.0, rated critical severity.
Is CVE-2009-4644 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-4644?: CVE-2009-4644 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-2009-4644?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2009-4644 published?: CVE-2009-4644 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-2009-4645 — High (CVSS 7.8): Directory traversal vulnerability in web_client_user_guide.html in Accellion Secure File Transfer Appliance before…
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…

All CVEs affecting Accellion Secure File Transfer Appliance →

Other CWE-78 (OS Command Injection) vulnerabilities

CVE-2026-56004 — Critical (CVSS 10.0): A shellcode injection in the mercurial handler of the obs tar_scm source service before version 0.12.4 could be used by…
CVE-2026-56415 — Critical (CVSS 10.0): Storage Concentrator (SC & SCVM) contains a command injection vulnerability within the debug.pl script that is…
CVE-2026-56413 — Critical (CVSS 10.0): Storage Concentrator (SC & SCVM) contains a command injection vulnerability in the ms_service.pl service, which listens…
CVE-2026-49869 — Critical (CVSS 10.0): Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.21, AuthenticationFilter in…
CVE-2026-49261 — Critical (CVSS 10.0): MariaDB server is a community developed fork of MySQL server. Versions 10.6.1 through 10.6.26, 10.11.1 through…
CVE-2026-10520 — Critical (CVSS 10.0): An OS Command Injection vulnerability in Ivanti Sentry before the R10.5.2, R10.6.2 and R10.7.1 versions allows a…

Browse all CWE-78 (OS Command Injection) vulnerabilities →