Cisco IOS 12.0 through 12.4, when IP-based tunnels and the Cisco Express Forwarding feature are enabled, allows remote attackers to cause…

Description

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 a malformed packet that is not properly handled during switching from one tunnel to a second tunnel, aka Bug IDs CSCsh97579 and CSCsq31776.

Scores

EPSS (exploitation in 30 days)

2.3% · top 17% of all CVEs (4 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.8.

Weakness

• n/a

Affected products

• n/a

  • affected n/a

References (7)

• http://tools.cisco.com/security/center/viewAlert.x?alertId=18893 (opens in a new tab)x_refsource_CONFIRMx_transferred
• 20090923 Cisco IOS Software Tunnels Vulnerability (opens in a new tab)vendor-advisoryx_refsource_CISCOx_transferred
• 1022930 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
• ADV-2009-2759 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• http://www.cisco.com/en/US/products/products_applied_mitigation_bulletin09186a0080af8113.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• 58333 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
• http://www.cisco.com/web/about/security/intelligence/Cisco_ERP_sep09.html (opens in a new tab)x_refsource_CONFIRMx_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

[![CVE-2009-2872](https://trackcve.app/badge/CVE-2009-2872.svg)](https://trackcve.app/cve/CVE-2009-2872)

Record last updated 7 Aug 2024, 06:07 UTC.