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CVE-2011-0389

23
FAUCET Score

CVE-2011-0389 describes a denial-of-service vulnerability in Cisco TelePresence Multipoint Switch (CTMS) devices running specific software versions (1.0.x, 1.1.x, 1.5.x, and 1.6.x). An unauthenticated remote attacker can exploit this by sending a specially crafted Real-Time Transport Control Protocol (RTCP) UDP packet, causing a process crash on the affected device. With a CVSS score of 7.8 (High), this vulnerability is easily exploitable over the network with low attack complexity, leading to a complete loss of availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
1.0.4.0CPE matchmatch criteria
cpe:2.3:a:cisco:telepresence_multipoint_switch_software:1.0.4.0:*:*:*:*:*:*:*
1.1.0CPE matchmatch criteria
cpe:2.3:a:cisco:telepresence_multipoint_switch_software:1.1.0:*:*:*:*:*:*:*
1.1.1CPE matchmatch criteria
cpe:2.3:a:cisco:telepresence_multipoint_switch_software:1.1.1:*:*:*:*:*:*:*
1.1.2CPE matchmatch criteria
cpe:2.3:a:cisco:telepresence_multipoint_switch_software:1.1.2:*:*:*:*:*:*:*
1.5.0CPE matchmatch criteria
cpe:2.3:a:cisco:telepresence_multipoint_switch_software:1.5.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.8HIGH

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.57%
Probability of exploitation in next 30 days
EPSS Percentile
83.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0257 is in the 71st percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

exchange.xforce.ibmcloud.com / vulnerabilities/65622
cisco.com / en/US/products/products_security_advisory09186a0080b6e14e.shtml
Vendor Advisory
securityfocus.com / bid/46520
securitytracker.com / id