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CVE-2009-2051
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…
High7.8EPSS 3.4%
- Published
- Updated
- Reserved
- Assigned by
- cisco
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) 4.x, 5.x before 5.1(3g), 6.x before 6.1(4), and 7.x before 7.1(2) allow remote attackers to cause a denial of service (device reload or voice-services outage) via a malformed SIP INVITE message that triggers an improper call to the sipSafeStrlen function, aka Bug IDs CSCsz40392 and CSCsz43987.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High7.8 | AV:N/AC:L/Au:N/C:N/I:N/A:C |
- EPSS (exploitation in 30 days)
- 3.4% · top 11% of all CVEs (7 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Weakness
- n/a
Affected products
n/a
- affected n/a
References (7)
- 57453 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- 36499 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 36152 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 36498 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 20090826 Cisco Unified Communications Manager Denial of Service Vulnerabilities (opens in a new tab)vendor-advisoryx_refsource_CISCOx_transferred
- 20100922 Cisco IOS Software Session Initiation Protocol Denial of Service Vulnerabilities (opens in a new tab)vendor-advisoryx_refsource_CISCOx_transferred
- 1022775 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2009-2051)Record last updated .