VIR Vulnerability Intelligence Relay

CVE-2011-2561

high
Published 2011-08-29 · Modified 2026-04-29
💬 Discuss on Community ✚ Propose mitigation
CVSS v3
—
CVSS v4 NEW
—
not yet in upstream
VIR risk
7.1

Description

The SIP process in Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 7.x before 7.1(5b)su4 and 8.x before 8.0(1) does not properly handle SDP data within a SIP call in certain situations related to use of the g729ar8 codec for a Media Termination Point (MTP), which allows remote attackers to cause a denial of service (service outage) via a crafted call, aka Bug ID CSCtc61990.

Predictions

Exploit likelihood
20%
Patch ETA
—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Application impact
VendorProductVersionsFixed
cisco ciscounified_communications_manager7.0\(1\)su1
cisco ciscounified_communications_manager7.0\(1\)su1a
cisco ciscounified_communications_manager7.0\(2\)
cisco ciscounified_communications_manager7.0\(2a\)
cisco ciscounified_communications_manager7.0\(2a\)su1
cisco ciscounified_communications_manager7.0\(2a\)su2
cisco ciscounified_communications_manager7.1\(2a\)
cisco ciscounified_communications_manager7.1\(2a\)su1
cisco ciscounified_communications_manager7.1\(2b\)
cisco ciscounified_communications_manager7.1\(2b\)su1
cisco ciscounified_communications_manager7.1\(3\)
cisco ciscounified_communications_manager7.1\(3a\)
cisco ciscounified_communications_manager7.1\(3a\)su1
cisco ciscounified_communications_manager7.1\(3a\)su1a
cisco ciscounified_communications_manager7.1\(3b\)
cisco ciscounified_communications_manager7.1\(3b\)su1
cisco ciscounified_communications_manager7.1\(3b\)su2
cisco ciscounified_communications_manager7.1\(5\)
cisco ciscounified_communications_manager7.1\(5\)su1
cisco ciscounified_communications_manager7.1\(5\)su1a
cisco ciscounified_communications_manager7.1\(5a\)
cisco ciscounified_communications_manager7.1\(5b\)
cisco ciscounified_communications_manager7.1\(5b\)su1
cisco ciscounified_communications_manager7.1\(5b\)su1a
cisco ciscounified_communications_manager7.1\(5b\)su2
cisco ciscounified_communications_manager7.1\(5b\)su3
cisco ciscounified_communications_manager8.0

References

CWEs

CWE-399

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.