How severe is CVE-2007-5331?

CVE-2007-5331 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2007-5331 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-5331?

CVE-2007-5331 primarily affects Broadcom Brightstor Arcserve Backup. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2007-5331?

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-2007-5331 published?

CVE-2007-5331 was published on 2007-10-13 and last updated on 2026-06-16.

CVE-2007-5331

CVE-2007-5331 is a critical-severity vulnerability in Broadcom Brightstor Arcserve Backup with a CVSS 2.0 base score of 10.0. 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-94.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 10% (95th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Broadcom Brightstor Arcserve Backup
Published: 2007-10-13
Last modified: 2026-06-16

Description

Queue.dll for the message queuing service (LQserver.exe) in CA BrightStor ARCServe BackUp v9.01 through R11.5, and Enterprise Backup r10.5, allows remote attackers to execute arbitrary code via a malformed ONRPC protocol request for operation 0x76, which causes ARCserve Backup to dereference arbitrary pointers.

Frequently asked questions

What is CVE-2007-5331?: Queue.dll for the message queuing service (LQserver.exe) in CA BrightStor ARCServe BackUp v9.01 through R11.5, and Enterprise Backup r10.5, allows remote attackers to execute arbitrary code via a malformed ONRPC protocol request for operation 0x76, which causes ARCserve Backup to dereference arbitrary pointers.
How severe is CVE-2007-5331?: CVE-2007-5331 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2007-5331 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-5331?: CVE-2007-5331 primarily affects Broadcom Brightstor Arcserve Backup. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2007-5331?: 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-2007-5331 published?: CVE-2007-5331 was published on 2007-10-13 and last updated on 2026-06-16.

References

Affected products (9)

cpe:2.3:a:broadcom:brightstor_arcserve_backup:9.01:*:*:*:*:*:*:*
cpe:2.3:a:broadcom:brightstor_arcserve_backup:11.1:*:*:*:*:*:*:*
cpe:2.3:a:broadcom:brightstor_arcserve_backup:11.5:*:*:*:*:*:*:*
cpe:2.3:a:broadcom:brightstor_enterprise_backup:10.5:*:*:*:*:*:*:*
cpe:2.3:a:broadcom:business_protection_suite:2.0:*:*:*:*:*:*:*
cpe:2.3:a:broadcom:server_protection_suite:2:*:*:*:*:*:*:*
cpe:2.3:a:ca:brightstor_arcserve_backup:11:*:windows:*:*:*:*:*
cpe:2.3:a:ca:business_protection_suite:2.0:*:microsoft_small_business_server_premium:*:*:*:*:*
cpe:2.3:a:ca:business_protection_suite:2.0:*:microsoft_small_business_server_standard:*:*:*:*:*

More vulnerabilities in Broadcom Brightstor Arcserve Backup

CVE-2008-3175 — Critical (CVSS 10.0): Integer underflow in rxRPC.dll in the LGServer service in the server in CA ARCserve Backup for Laptops and Desktops…
CVE-2008-2241 — Critical (CVSS 10.0): Directory traversal vulnerability in caloggerd in CA BrightStor ARCServe Backup 11.0, 11.1, and 11.5 allows remote…
CVE-2007-5327 — Critical (CVSS 10.0): Stack-based buffer overflow in the RPC interface for the Message Engine (mediasvr.exe) in CA BrightStor ARCServe BackUp…
CVE-2007-5329 — Critical (CVSS 10.0): Unspecified vulnerability in dbasvr in CA BrightStor ARCServe BackUp v9.01 through R11.5, and Enterprise Backup r10.5,…
CVE-2007-5328 — Critical (CVSS 10.0): The Message Engine RPC service in CA BrightStor ARCServe BackUp v9.01 through R11.5, and Enterprise Backup r10.5,…
CVE-2007-5332 — Critical (CVSS 10.0): Multiple unspecified vulnerabilities in (1) mediasvr and (2) caloggerd in CA BrightStor ARCServe BackUp v9.01 through…

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