How severe is CVE-2009-3855?

CVE-2009-3855 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2009-3855 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-3855?

CVE-2009-3855 primarily affects Ibm Tivoli Storage Manager. In total, 17 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-3855?

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-2009-3855 published?

CVE-2009-3855 was published on 2009-11-04 and last updated on 2026-06-16.

CVE-2009-3855

CVE-2009-3855 is a critical-severity vulnerability in Ibm Tivoli Storage Manager with a CVSS 2.0 base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Ibm Tivoli Storage Manager
Published: 2009-11-04
Last modified: 2026-06-16

Description

Multiple unspecified vulnerabilities in the (1) UNIX and (2) Linux backup-archive clients, and the (3) OS/400 API client, in IBM Tivoli Storage Manager (TSM) 5.3 before 5.3.6.6, 5.4 before 5.4.2, and 5.5 before 5.5.1, when the MAILPROG option is enabled, allow attackers to read, modify, or delete arbitrary files via unknown vectors.

Frequently asked questions

What is CVE-2009-3855?: Multiple unspecified vulnerabilities in the (1) UNIX and (2) Linux backup-archive clients, and the (3) OS/400 API client, in IBM Tivoli Storage Manager (TSM) 5.3 before 5.3.6.6, 5.4 before 5.4.2, and 5.5 before 5.5.1, when the MAILPROG option is enabled, allow attackers to read, modify, or delete arbitrary files via unknown vectors.
How severe is CVE-2009-3855?: CVE-2009-3855 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2009-3855 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-3855?: CVE-2009-3855 primarily affects Ibm Tivoli Storage Manager. In total, 17 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-3855?: 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-2009-3855 published?: CVE-2009-3855 was published on 2009-11-04 and last updated on 2026-06-16.

References

Affected products (17)

cpe:2.3:a:ibm:tivoli_storage_manager:5.2.5.3:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_storage_manager:5.3:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_storage_manager:5.3.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_storage_manager:5.3.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_storage_manager:5.3.2:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_storage_manager:5.3.2.4:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_storage_manager:5.3.3:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_storage_manager:5.3.4:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_storage_manager:5.3.5.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_storage_manager:5.3.6.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_storage_manager:5.3.6.2:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_storage_manager:5.3.6.3:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_storage_manager:5.3.6.4:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_storage_manager:5.3.6.5:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_storage_manager:5.4.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_storage_manager:5.4.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_storage_manager:5.5.0:*:*:*:*:*:*:*

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