CVE-2010-2835

high
Published 2010-09-23 ยท Modified 2026-04-29
CVSS v3
โ€”
CVSS v4 NEW
โ€”
not yet in upstream
VIR risk
7.8

Description

Cisco IOS 12.2 through 12.4 and 15.0 through 15.1, Cisco IOS XE 2.5.x and 2.6.x before 2.6.1, and Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 6.x before 6.1(5), 7.0 before 7.0(2a)su3, 7.1su before 7.1(3b)su2, 7.1 before 7.1(5), and 8.0 before 8.0(1) allow remote attackers to cause a denial of service (device reload or voice-services outage) via a SIP REFER request with an invalid Refer-To header, aka Bug IDs CSCta20040 and CSCta31358.

Predictions

Exploit likelihood
20%
Patch ETA
โ€”

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 โ€” if you've already worked around this in production โ€” publish your fix to the community-verified tier.

โœš Propose a mitigation on Community โ†’ 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_manager6.0
cisco ciscounified_communications_manager6.0\(1.2114.1\)
cisco ciscounified_communications_manager6.0\(1.2121.1\)
cisco ciscounified_communications_manager6.0\(1b\)
cisco ciscounified_communications_manager6.1\(1\)
cisco ciscounified_communications_manager6.1\(1a\)
cisco ciscounified_communications_manager6.1\(1b\)
cisco ciscounified_communications_manager6.1\(2\)
cisco ciscounified_communications_manager6.1\(2\)su1
cisco ciscounified_communications_manager6.1\(2\)su1a
cisco ciscounified_communications_manager6.1\(3\)
cisco ciscounified_communications_manager6.1\(3a\)
cisco ciscounified_communications_manager6.1\(3b\)
cisco ciscounified_communications_manager6.1\(3b\)su1
cisco ciscounified_communications_manager6.1\(4\)
cisco ciscounified_communications_manager6.1\(4\)su1
cisco ciscounified_communications_manager6.1\(4a\)
cisco ciscounified_communications_manager6.1\(4a\)su2
cisco ciscounified_communications_manager7.0
cisco ciscounified_communications_manager7.0\(1\)
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_manager8.0

References

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

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