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CVE-2009-0636
Unspecified vulnerability in Cisco IOS 12.0 through 12.4, when SIP voice services are enabled, allows remote attackers to cause a denial…
High7.8EPSS 2.9%
- Published
- Updated
- Reserved
- Assigned by
- cisco
Description
Unspecified vulnerability in Cisco IOS 12.0 through 12.4, when SIP voice services are enabled, allows remote attackers to cause a denial of service (device crash) via a valid SIP message.
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)
- 2.9% · top 13% of all CVEs (5 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)
- 20090325 Cisco IOS Software Session Initiation Protocol Denial of Service Vulnerability (opens in a new tab)vendor-advisoryx_refsource_CISCOx_transferred
- http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90469.shtml (opens in a new tab)x_refsource_CONFIRMx_transferred
- 34243 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 34438 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- ios-sip-dos(49421) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- 1021902 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- ADV-2009-0851 (opens in a new tab)vdb-entryx_refsource_VUPENx_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-2009-0636)Record last updated .