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Vulnerability record · CVE-2011-2577 · published 31 August 2011

CVE-2011-2577: Cisco telepresence codec c40 vulnerability

Cisco · Telepresence Codec C40

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.

7.8 CVSS 2.0 High EPSS 13% · top 3.9%
7.8CVSS 2.0 base score
13%EPSS exploitation probability, 30 days
NoNot in CISA KEV
11Affected product versions listed by NVD
16References, 2 tagged exploit
16 Jun 2026Last modified by 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.

AV:N/AC:L/Au:N/C:N/I:N/A:C

Affected products

11 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://securityreason.com/securityalert/8387
http://securityreason.com/securityalert/8389
http://www.cisco.com/en/US/products/products_security_advisory09186a0080b91395.shtml Vendor Advisory
http://www.exploit-db.com/exploits/17871 Exploit
http://www.securityfocus.com/archive/1/519698/100/0/threaded
http://www.securityfocus.com/bid/49392
http://www.securitytracker.com/id?1025994
https://exchange.xforce.ibmcloud.com/vulnerabilities/69513
http://securityreason.com/securityalert/8387
http://securityreason.com/securityalert/8389
http://www.cisco.com/en/US/products/products_security_advisory09186a0080b91395.shtml Vendor Advisory
http://www.exploit-db.com/exploits/17871 Exploit
http://www.securityfocus.com/archive/1/519698/100/0/threaded
http://www.securityfocus.com/bid/49392
http://www.securitytracker.com/id?1025994
https://exchange.xforce.ibmcloud.com/vulnerabilities/69513

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.0CVE-2011-2543Cisco telepresence codec c40 memory buffer overflow vulnerabilityBuffer overflow in the cuil component in Cisco Telepresence System Integrator C Series 4.x before TC4.2.0 allows remote authenticated users to cause …EPSS 12%7.8CVE-2013-3377Cisco telepresence tc software vulnerabilityCisco TelePresence TC Software before 5.1.7 and TE Software before 4.1.3 allow remote attackers to cause a denial of service (device reload) via craf…EPSS 1.9%

Source: NIST National Vulnerability Database (record CVE-2011-2577), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.