How severe is CVE-2011-4520?

CVE-2011-4520 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2011-4520 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-2011-4520?

CVE-2011-4520 primarily affects Microsys Promotic. In total, 19 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-4520?

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

When was CVE-2011-4520 published?

CVE-2011-4520 was published on 2013-05-23 and last updated on 2026-06-16.

CVE-2011-4520

CVE-2011-4520 is a medium-severity vulnerability in Microsys Promotic with a CVSS 2.0 base score of 4.3. 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: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Microsys Promotic
Published: 2013-05-23
Last modified: 2026-06-16

Description

Heap-based buffer overflow in an ActiveX component in MICROSYS PROMOTIC before 8.1.5 allows remote attackers to cause a denial of service via a crafted web page.

Frequently asked questions

What is CVE-2011-4520?: Heap-based buffer overflow in an ActiveX component in MICROSYS PROMOTIC before 8.1.5 allows remote attackers to cause a denial of service via a crafted web page.
How severe is CVE-2011-4520?: CVE-2011-4520 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2011-4520 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-2011-4520?: CVE-2011-4520 primarily affects Microsys Promotic. In total, 19 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-4520?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-4520 published?: CVE-2011-4520 was published on 2013-05-23 and last updated on 2026-06-16.

References

Affected products (19)

cpe:2.3:a:microsys:promotic:*:*:*:*:*:*:*:*
cpe:2.3:a:microsys:promotic:8.0.0:*:*:*:*:*:*:*
cpe:2.3:a:microsys:promotic:8.0.1:*:*:*:*:*:*:*
cpe:2.3:a:microsys:promotic:8.0.2:*:*:*:*:*:*:*
cpe:2.3:a:microsys:promotic:8.0.3:*:*:*:*:*:*:*
cpe:2.3:a:microsys:promotic:8.0.4:*:*:*:*:*:*:*
cpe:2.3:a:microsys:promotic:8.0.5:*:*:*:*:*:*:*
cpe:2.3:a:microsys:promotic:8.0.6:*:*:*:*:*:*:*
cpe:2.3:a:microsys:promotic:8.0.7:*:*:*:*:*:*:*
cpe:2.3:a:microsys:promotic:8.0.8:*:*:*:*:*:*:*
cpe:2.3:a:microsys:promotic:8.0.9:*:*:*:*:*:*:*
cpe:2.3:a:microsys:promotic:8.0.10:*:*:*:*:*:*:*
cpe:2.3:a:microsys:promotic:8.0.11:*:*:*:*:*:*:*
cpe:2.3:a:microsys:promotic:8.0.12:*:*:*:*:*:*:*
cpe:2.3:a:microsys:promotic:8.0.13:*:*:*:*:*:*:*
cpe:2.3:a:microsys:promotic:8.1.0:*:*:*:*:*:*:*
cpe:2.3:a:microsys:promotic:8.1.1:*:*:*:*:*:*:*
cpe:2.3:a:microsys:promotic:8.1.2:*:*:*:*:*:*:*
cpe:2.3:a:microsys:promotic:8.1.3:*:*:*:*:*:*:*

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