How severe is CVE-2009-1761?

CVE-2009-1761 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2009-1761 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-1761?

CVE-2009-1761 primarily affects Ca Arcserve Backup. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-1761?

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

When was CVE-2009-1761 published?

CVE-2009-1761 was published on 2009-06-16 and last updated on 2026-06-16.

CVE-2009-1761

CVE-2009-1761 is a medium-severity vulnerability in Ca Arcserve Backup with a CVSS 2.0 base score of 5.0. 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-20.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Ca Arcserve Backup
Published: 2009-06-16
Last modified: 2026-06-16

Description

The message engine in CA ARCserve Backup r12.0 and r12.0 SP1 for Windows allows remote attackers to cause a denial of service (crash) via (1) an invalid 0x13 message, which is not properly handled in the ASCORE module, or (2) a 0x3B message with invalid stub data that triggers an RPC marshalling error.

Frequently asked questions

What is CVE-2009-1761?: The message engine in CA ARCserve Backup r12.0 and r12.0 SP1 for Windows allows remote attackers to cause a denial of service (crash) via (1) an invalid 0x13 message, which is not properly handled in the ASCORE module, or (2) a 0x3B message with invalid stub data that triggers an RPC marshalling error.
How severe is CVE-2009-1761?: CVE-2009-1761 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2009-1761 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-1761?: CVE-2009-1761 primarily affects Ca Arcserve Backup. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-1761?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-1761 published?: CVE-2009-1761 was published on 2009-06-16 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:ca:arcserve_backup:r12.0:*:windows:*:*:*:*:*
cpe:2.3:a:ca:arcserve_backup:r12.0:sp1:windows:*:*:*:*:*

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