CVE-2011-2577

What it is

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.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of service disruption.

Exploit odds

12.7% chance of exploitation in the next 30 days (EPSS). Higher than most.

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2011-08-31 23:55 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-16 23:31 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 12.7% in the next 30 days (EPSS).
• Severity: 7.8 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2011-08-31 23:55 UTC

Last modified

2026-06-16 23:31 UTC

Exploit probability

12.7% · EPSS, next 30 days

Record status

Modified

Affected

• Cisco Telepresence Codec c40
• Cisco Telepresence Codec c60
• Cisco Telepresence Codec c90
• Cisco Telepresence ex60
• Cisco Telepresence ex90
• Cisco Telepresence C Series Software ≤ tc3.1.4
• Cisco Telepresence C Series Software tc3.0.0
• Cisco Telepresence C Series Software tc3.1.0

Attack profile CVSS 2.0 · 7.8

Attack vector

Network

Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2011-2577.md and follow it. Check whether this project is affected by CVE-2011-2577. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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