Is CVE-2011-4789 in the CISA KEV catalog?

No. CVE-2011-4789 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2011-4789?

CVE-2011-4789 has a CVSS v2 base score of 10.0 (HIGH).

What is the EPSS score for CVE-2011-4789?

CVE-2011-4789 has an EPSS score of 64.80% (99th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2011-4789

HIGHEPSS 99th pctl

10.0

CVSS v2

NVD

Description

Stack-based buffer overflow in magentservice.exe in the server in HP LoadRunner 11.00 before patch 4 allows remote attackers to execute arbitrary code via a crafted size value in a packet. NOTE: it was originally reported that the affected product is HP Diagnostics Server, but HP states that "the vulnerable product is actually HP LoadRunner."

CWE-119Buffer Overflow

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

64.80%probability of exploitation in 30 days

99thpercentile

Very high risk: more likely to be exploited than 99% of all known CVEs.

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.