CVE-2010-2835: n/a vulnerability

CVE-2010-2835: 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 Uni...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedSep 17, 2024, 00:25 UTC (UTC+00:00)

Security readout for executives and security teams

This CVE can let a remote attacker crash or disrupt Cisco voice and routing platforms that process SIP traffic. The reported impact is device reload or voice-service outage, so the business concern is communications availability rather than data theft. Exposure is most likely where affected Cisco IOS, IOS XE, or CUCM versions still handle SIP traffic, especially from untrusted networks. The source bundle does not establish whether SIP must be internet-facing. Treat as a service-availability risk for legacy Cisco voice and routing environments. Prioritize systems supporting critical communications or exposed SIP paths; deprioritize fully retired or unreachable affected versions. Mitigation focus: Identify affected Cisco IOS, IOS XE, and CUCM versions in inventory.; Upgrade IOS XE 2.5.x or 2.6.x systems to 2.6.1 or later.; Upgrade CUCM branches to the non-affected versions listed in Cisco guidance..

Prepared: Jun 28, 2026, 01:40 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Sep 23, 2010, 18:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

1Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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