CVE-2009-2873
Cisco IOS 12.0 through 12.4, when IP-based tunnels and the Cisco Express Forwarding feature are...
Cisco IOS 12.0 through 12.4, when IP-based tunnels and the Cisco Express Forwarding feature are enabled, allows remote attackers to cause a denial of service (device reload) via malformed packets, aka Bug ID CSCsx70889.
Exploit likelihood
What each source reports
NVD Score used
Cisco IOS 12.0 through 12.4, when IP-based tunnels and the Cisco Express Forwarding feature are enabled, allows remote attackers to cause a denial of service (device reload) via malformed packets, aka Bug ID CSCsx70889.
- Record
CVE-2009-2873- CVSS 2.0
- 7.1 High
AV:N/AC:M/Au:N/C:N/I:N/A:C - Updated
- 2026-11-02
CVE List No score
Cisco IOS 12.0 through 12.4, when IP-based tunnels and the Cisco Express Forwarding feature are enabled, allows remote attackers to cause a denial of service (device reload) via malformed packets, aka Bug ID CSCsx70889.
- Record
CVE-2009-2873- Updated
- 2026-11-02
EUVDEUVD-2009-2863 No score
Cisco IOS 12.0 through 12.4, when IP-based tunnels and the Cisco Express Forwarding feature are enabled, allows remote attackers to cause a denial of service (device reload) via malformed packets, aka Bug ID CSCsx70889.
- Record
EUVD-2009-2863- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-hf63-h777-fqg6 No score
Cisco IOS 12.0 through 12.4, when IP-based tunnels and the Cisco Express Forwarding feature are...
Cisco IOS 12.0 through 12.4, when IP-based tunnels and the Cisco Express Forwarding feature are enabled, allows remote attackers to cause a denial of service (device reload) via malformed packets, aka Bug ID CSCsx70889.
- Record
GHSA-hf63-h777-fqg6- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2009-2873 is a high vulnerability (CVSS 7.1) in Cisco Ios, published September 28, 2009. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.68%, the 77th percentile. No source names a fixed version.
References
cisco.com/en/US/products/products_security_advisory09186a0080af8115.shtml
securitytracker.com/id?1022930
vupen.com/english/advisories/2009/2759
tools.cisco.com/security/center/viewAlert.x?alertId=18895
osvdb.org/58334
nvd.nist.gov/vuln/detail/CVE-2009-2873
github.com/advisories/GHSA-hf63-h777-fqg6