Is CVE-2011-2577 in the CISA KEV catalog?

No. CVE-2011-2577 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2011-2577?

CVE-2011-2577 has a CVSS v2 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2011-2577?

CVE-2011-2577 has an EPSS score of 12.71% (96th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2011-2577

HIGHEPSS 96th pctl

7.8

CVSS v2

NVD

Description

Unspecified vulnerability in Cisco TelePresence C Series Endpoints, E/EX Personal Video units, and MXP Series Codecs, when using software versions before TC 4.0.0 or F9.1, allows remote attackers to cause a denial of service (crash) via a crafted SIP packet to port 5060 or 5061, aka Bug ID CSCtq46500.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

12.71%probability of exploitation in 30 days

96thpercentile

Very high risk: more likely to be exploited than 96% 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.