Is CVE-2011-0263 in the CISA KEV catalog?

No. CVE-2011-0263 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2011-0263?

CVE-2011-0263 has a CVSS v2 base score of 10.0 (HIGH).

What is the EPSS score for CVE-2011-0263?

CVE-2011-0263 has an EPSS score of 17.10% (97th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2011-0263

HIGHEPSS 97th pctl

10.0

CVSS v2

NVD

Description

Multiple stack-based buffer overflows in ovas.exe in the OVAS service in HP OpenView Network Node Manager (OV NNM) 7.51 and 7.53 allow remote attackers to execute arbitrary code via a long (1) Source Node or (2) Destination Node variable.

CWE-119Buffer Overflow

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

17.10%probability of exploitation in 30 days

97thpercentile

Very high risk: more likely to be exploited than 97% of all known CVEs.

References

http://www.securityfocus.com/archive/1/515628
http://www.securityfocus.com/bid/45762
http://www.securitytracker.com/id?1024951
http://www.vupen.com/english/advisories/2011/0085
http://www.zerodayinitiative.com/advisories/ZDI-11-005/
https://exchange.xforce.ibmcloud.com/vulnerabilities/64653

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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.