How severe is CVE-2009-1628?

CVE-2009-1628 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2009-1628 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-1628?

CVE-2009-1628 primarily affects Unisys Business Information Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-1628?

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-2009-1628 published?

CVE-2009-1628 was published on 2009-06-26 and last updated on 2026-06-16.

CVE-2009-1628

CVE-2009-1628 is a critical-severity vulnerability in Unisys Business Information Server 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-119.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 5% (92nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Unisys Business Information Server
Published: 2009-06-26
Last modified: 2026-06-16

Description

Stack-based buffer overflow in mnet.exe in Unisys Business Information Server (BIS) 10 and 10.1 on Windows allows remote attackers to execute arbitrary code via a crafted TCP packet.

Frequently asked questions

What is CVE-2009-1628?: Stack-based buffer overflow in mnet.exe in Unisys Business Information Server (BIS) 10 and 10.1 on Windows allows remote attackers to execute arbitrary code via a crafted TCP packet.
How severe is CVE-2009-1628?: CVE-2009-1628 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2009-1628 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-1628?: CVE-2009-1628 primarily affects Unisys Business Information Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-1628?: 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-2009-1628 published?: CVE-2009-1628 was published on 2009-06-26 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:unisys:business_information_server:10:*:*:*:*:*:*:*
cpe:2.3:a:unisys:business_information_server:10.1:*:*:*:*:*:*:*

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