Vulnerability Monitor

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CVE-2009-2872

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.

Security Impact Summary

CVE-2009-2872 is a security vulnerability that . Impacting 1 product from cisco organizations running these solutions should prioritize assessment and patching.

Historical Context

Originally identified in 2009, this vulnerability predates many modern security frameworks and practices. The vulnerability landscape of that era was characterized by different threat models and less mature defense mechanisms compared to contemporary standards.

Published

2009-09-28T19:30:01.530

Last Modified

2025-04-09T00:30:58.490

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 6.8 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:S/C:N/I:N/A:C

Access Vector: NETWORK
Access Complexity: LOW
Authentication: SINGLE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: COMPLETE

Exploitability Score

8.0

Impact Score

6.9

Weaknesses

Type: Primary
NVD-CWE-Other

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	cisco	ios	12.0	Yes
Operating System	cisco	ios	12.0da	Yes
Operating System	cisco	ios	12.0db	Yes
Operating System	cisco	ios	12.0dc	Yes
Operating System	cisco	ios	12.0s	Yes
Operating System	cisco	ios	12.0sc	Yes
Operating System	cisco	ios	12.0sl	Yes
Operating System	cisco	ios	12.0sp	Yes
Operating System	cisco	ios	12.0st	Yes
Operating System	cisco	ios	12.0sx	Yes
Operating System	cisco	ios	12.0sy	Yes
Operating System	cisco	ios	12.0sz	Yes
Operating System	cisco	ios	12.0t	Yes
Operating System	cisco	ios	12.0w	Yes
Operating System	cisco	ios	12.0wc	Yes
Operating System	cisco	ios	12.0xa	Yes
Operating System	cisco	ios	12.0xb	Yes
Operating System	cisco	ios	12.0xc	Yes
Operating System	cisco	ios	12.0xd	Yes
Operating System	cisco	ios	12.0xe	Yes
Operating System	cisco	ios	12.0xg	Yes
Operating System	cisco	ios	12.0xh	Yes
Operating System	cisco	ios	12.0xi	Yes
Operating System	cisco	ios	12.0xj	Yes
Operating System	cisco	ios	12.0xk	Yes
Operating System	cisco	ios	12.0xl	Yes
Operating System	cisco	ios	12.0xm	Yes
Operating System	cisco	ios	12.0xn	Yes
Operating System	cisco	ios	12.0xq	Yes
Operating System	cisco	ios	12.0xr	Yes
Operating System	cisco	ios	12.0xt	Yes
Operating System	cisco	ios	12.0xv	Yes
Operating System	cisco	ios	12.1	Yes
Operating System	cisco	ios	12.1aa	Yes
Operating System	cisco	ios	12.1ax	Yes
Operating System	cisco	ios	12.1ay	Yes
Operating System	cisco	ios	12.1cx	Yes
Operating System	cisco	ios	12.1da	Yes
Operating System	cisco	ios	12.1db	Yes
Operating System	cisco	ios	12.1dc	Yes
Operating System	cisco	ios	12.1e	Yes
Operating System	cisco	ios	12.1ea	Yes
Operating System	cisco	ios	12.1eb	Yes
Operating System	cisco	ios	12.1ec	Yes
Operating System	cisco	ios	12.1eo	Yes
Operating System	cisco	ios	12.1eu	Yes
Operating System	cisco	ios	12.1ew	Yes
Operating System	cisco	ios	12.1ex	Yes
Operating System	cisco	ios	12.1ey	Yes
Operating System	cisco	ios	12.1ez	Yes
Operating System	cisco	ios	12.1ga	Yes
Operating System	cisco	ios	12.1gb	Yes
Operating System	cisco	ios	12.1t	Yes
Operating System	cisco	ios	12.1xa	Yes
Operating System	cisco	ios	12.1xb	Yes
Operating System	cisco	ios	12.1xc	Yes
Operating System	cisco	ios	12.1xd	Yes
Operating System	cisco	ios	12.1xe	Yes
Operating System	cisco	ios	12.1xf	Yes
Operating System	cisco	ios	12.1xg	Yes
Operating System	cisco	ios	12.1xh	Yes
Operating System	cisco	ios	12.1xi	Yes
Operating System	cisco	ios	12.1xj	Yes
Operating System	cisco	ios	12.1xl	Yes
Operating System	cisco	ios	12.1xm	Yes
Operating System	cisco	ios	12.1xp	Yes
Operating System	cisco	ios	12.1xq	Yes
Operating System	cisco	ios	12.1xr	Yes
Operating System	cisco	ios	12.1xs	Yes
Operating System	cisco	ios	12.1xt	Yes
Operating System	cisco	ios	12.1xu	Yes
Operating System	cisco	ios	12.1xv	Yes
Operating System	cisco	ios	12.1xw	Yes
Operating System	cisco	ios	12.1xx	Yes
Operating System	cisco	ios	12.1xy	Yes
Operating System	cisco	ios	12.1xz	Yes
Operating System	cisco	ios	12.1ya	Yes
Operating System	cisco	ios	12.1yb	Yes
Operating System	cisco	ios	12.1yc	Yes
Operating System	cisco	ios	12.1yd	Yes
Operating System	cisco	ios	12.1ye	Yes
Operating System	cisco	ios	12.1yf	Yes
Operating System	cisco	ios	12.1yh	Yes
Operating System	cisco	ios	12.1yi	Yes
Operating System	cisco	ios	12.2	Yes
Operating System	cisco	ios	12.2b	Yes
Operating System	cisco	ios	12.2bc	Yes
Operating System	cisco	ios	12.2bw	Yes
Operating System	cisco	ios	12.2bx	Yes
Operating System	cisco	ios	12.2by	Yes
Operating System	cisco	ios	12.2bz	Yes
Operating System	cisco	ios	12.2cx	Yes
Operating System	cisco	ios	12.2cy	Yes
Operating System	cisco	ios	12.2cz	Yes
Operating System	cisco	ios	12.2da	Yes
Operating System	cisco	ios	12.2dd	Yes
Operating System	cisco	ios	12.2dx	Yes
Operating System	cisco	ios	12.2ew	Yes
Operating System	cisco	ios	12.2ewa	Yes
Operating System	cisco	ios	12.2ex	Yes
Operating System	cisco	ios	12.2ez	Yes
Operating System	cisco	ios	12.2fz	Yes
Operating System	cisco	ios	12.2ira	Yes
Operating System	cisco	ios	12.2irb	Yes
Operating System	cisco	ios	12.2irc	Yes
Operating System	cisco	ios	12.2ixa	Yes
Operating System	cisco	ios	12.2ixb	Yes
Operating System	cisco	ios	12.2ixc	Yes
Operating System	cisco	ios	12.2ixd	Yes
Operating System	cisco	ios	12.2ixe	Yes
Operating System	cisco	ios	12.2ixf	Yes
Operating System	cisco	ios	12.2ixg	Yes
Operating System	cisco	ios	12.2ixh	Yes
Operating System	cisco	ios	12.2ja	Yes
Operating System	cisco	ios	12.2jk	Yes
Operating System	cisco	ios	12.2mb	Yes
Operating System	cisco	ios	12.2mc	Yes
Operating System	cisco	ios	12.2s	Yes
Operating System	cisco	ios	12.2sb	Yes
Operating System	cisco	ios	12.2sbc	Yes
Operating System	cisco	ios	12.2sca	Yes
Operating System	cisco	ios	12.2scb	Yes
Operating System	cisco	ios	12.2se	Yes
Operating System	cisco	ios	12.2sea	Yes
Operating System	cisco	ios	12.2seb	Yes
Operating System	cisco	ios	12.2sec	Yes
Operating System	cisco	ios	12.2sed	Yes
Operating System	cisco	ios	12.2see	Yes
Operating System	cisco	ios	12.2sef	Yes
Operating System	cisco	ios	12.2seg	Yes
Operating System	cisco	ios	12.2sg	Yes
Operating System	cisco	ios	12.2sga	Yes
Operating System	cisco	ios	12.2sm	Yes
Operating System	cisco	ios	12.2so	Yes
Operating System	cisco	ios	12.2sq	Yes
Operating System	cisco	ios	12.2sra	Yes
Operating System	cisco	ios	12.2srb	Yes
Operating System	cisco	ios	12.2src	Yes
Operating System	cisco	ios	12.2srd	Yes
Operating System	cisco	ios	12.2ste	Yes
Operating System	cisco	ios	12.2su	Yes
Operating System	cisco	ios	12.2sv	Yes
Operating System	cisco	ios	12.2sva	Yes
Operating System	cisco	ios	12.2svd	Yes
Operating System	cisco	ios	12.2sve	Yes
Operating System	cisco	ios	12.2sx	Yes
Operating System	cisco	ios	12.2sxa	Yes
Operating System	cisco	ios	12.2sxb	Yes
Operating System	cisco	ios	12.2sxd	Yes
Operating System	cisco	ios	12.2sxe	Yes
Operating System	cisco	ios	12.2sxf	Yes
Operating System	cisco	ios	12.2sxh	Yes
Operating System	cisco	ios	12.2sxi	Yes
Operating System	cisco	ios	12.2sy	Yes
Operating System	cisco	ios	12.2sz	Yes
Operating System	cisco	ios	12.2t	Yes
Operating System	cisco	ios	12.2tpc	Yes
Operating System	cisco	ios	12.2xa	Yes
Operating System	cisco	ios	12.2xb	Yes
Operating System	cisco	ios	12.2xc	Yes
Operating System	cisco	ios	12.2xd	Yes
Operating System	cisco	ios	12.2xf	Yes
Operating System	cisco	ios	12.2xg	Yes
Operating System	cisco	ios	12.2xh	Yes
Operating System	cisco	ios	12.2xi	Yes
Operating System	cisco	ios	12.2xj	Yes
Operating System	cisco	ios	12.2xk	Yes
Operating System	cisco	ios	12.2xl	Yes
Operating System	cisco	ios	12.2xm	Yes
Operating System	cisco	ios	12.2xo	Yes
Operating System	cisco	ios	12.2xq	Yes
Operating System	cisco	ios	12.2xr	Yes
Operating System	cisco	ios	12.2xs	Yes
Operating System	cisco	ios	12.2xt	Yes
Operating System	cisco	ios	12.2xu	Yes
Operating System	cisco	ios	12.2xv	Yes
Operating System	cisco	ios	12.2ya	Yes
Operating System	cisco	ios	12.2yb	Yes
Operating System	cisco	ios	12.2yc	Yes
Operating System	cisco	ios	12.2yd	Yes
Operating System	cisco	ios	12.2ye	Yes
Operating System	cisco	ios	12.2yg	Yes
Operating System	cisco	ios	12.2yj	Yes
Operating System	cisco	ios	12.2yk	Yes
Operating System	cisco	ios	12.2yl	Yes
Operating System	cisco	ios	12.2ym	Yes
Operating System	cisco	ios	12.2yn	Yes
Operating System	cisco	ios	12.2yo	Yes
Operating System	cisco	ios	12.2yq	Yes
Operating System	cisco	ios	12.2yr	Yes
Operating System	cisco	ios	12.2yt	Yes
Operating System	cisco	ios	12.2yu	Yes
Operating System	cisco	ios	12.2yv	Yes
Operating System	cisco	ios	12.2yw	Yes
Operating System	cisco	ios	12.2yx	Yes
Operating System	cisco	ios	12.2yy	Yes
Operating System	cisco	ios	12.2za	Yes
Operating System	cisco	ios	12.2zb	Yes
Operating System	cisco	ios	12.2zc	Yes
Operating System	cisco	ios	12.2zd	Yes
Operating System	cisco	ios	12.2zf	Yes
Operating System	cisco	ios	12.2zg	Yes
Operating System	cisco	ios	12.2zh	Yes
Operating System	cisco	ios	12.2zj	Yes
Operating System	cisco	ios	12.2zl	Yes
Operating System	cisco	ios	12.2zp	Yes
Operating System	cisco	ios	12.2zu	Yes
Operating System	cisco	ios	12.2zx	Yes
Operating System	cisco	ios	12.2zya	Yes
Operating System	cisco	ios	12.3	Yes
Operating System	cisco	ios	12.3b	Yes
Operating System	cisco	ios	12.3bc	Yes
Operating System	cisco	ios	12.3bw	Yes
Operating System	cisco	ios	12.3ja	Yes
Operating System	cisco	ios	12.3jea	Yes
Operating System	cisco	ios	12.3jeb	Yes
Operating System	cisco	ios	12.3jec	Yes
Operating System	cisco	ios	12.3jk	Yes
Operating System	cisco	ios	12.3jl	Yes
Operating System	cisco	ios	12.3t	Yes
Operating System	cisco	ios	12.3tpc	Yes
Operating System	cisco	ios	12.3va	Yes
Operating System	cisco	ios	12.3xa	Yes
Operating System	cisco	ios	12.3xb	Yes
Operating System	cisco	ios	12.3xc	Yes
Operating System	cisco	ios	12.3xd	Yes
Operating System	cisco	ios	12.3xf	Yes
Operating System	cisco	ios	12.3xg	Yes
Operating System	cisco	ios	12.3xi	Yes
Operating System	cisco	ios	12.3xj	Yes
Operating System	cisco	ios	12.3xk	Yes
Operating System	cisco	ios	12.3xl	Yes
Operating System	cisco	ios	12.3xq	Yes
Operating System	cisco	ios	12.3xr	Yes
Operating System	cisco	ios	12.3xu	Yes
Operating System	cisco	ios	12.3xx	Yes
Operating System	cisco	ios	12.3xy	Yes
Operating System	cisco	ios	12.3xz	Yes
Operating System	cisco	ios	12.3yd	Yes
Operating System	cisco	ios	12.3yf	Yes
Operating System	cisco	ios	12.3yg	Yes
Operating System	cisco	ios	12.3yi	Yes
Operating System	cisco	ios	12.3yj	Yes
Operating System	cisco	ios	12.3yk	Yes
Operating System	cisco	ios	12.3ym	Yes
Operating System	cisco	ios	12.3yq	Yes
Operating System	cisco	ios	12.3ys	Yes
Operating System	cisco	ios	12.3yt	Yes
Operating System	cisco	ios	12.3yu	Yes
Operating System	cisco	ios	12.3yx	Yes
Operating System	cisco	ios	12.3yz	Yes
Operating System	cisco	ios	12.4	Yes
Operating System	cisco	ios	12.4ja	Yes
Operating System	cisco	ios	12.4jda	Yes
Operating System	cisco	ios	12.4jdc	Yes
Operating System	cisco	ios	12.4jdd	Yes
Operating System	cisco	ios	12.4jk	Yes
Operating System	cisco	ios	12.4jl	Yes
Operating System	cisco	ios	12.4jma	Yes
Operating System	cisco	ios	12.4jx	Yes
Operating System	cisco	ios	12.4md	Yes
Operating System	cisco	ios	12.4mda	Yes
Operating System	cisco	ios	12.4sw	Yes
Operating System	cisco	ios	12.4t	Yes
Operating System	cisco	ios	12.4xa	Yes
Operating System	cisco	ios	12.4xb	Yes
Operating System	cisco	ios	12.4xc	Yes
Operating System	cisco	ios	12.4xd	Yes
Operating System	cisco	ios	12.4xe	Yes
Operating System	cisco	ios	12.4xf	Yes
Operating System	cisco	ios	12.4xg	Yes
Operating System	cisco	ios	12.4xj	Yes
Operating System	cisco	ios	12.4xk	Yes
Operating System	cisco	ios	12.4xl	Yes
Operating System	cisco	ios	12.4xm	Yes
Operating System	cisco	ios	12.4xn	Yes
Operating System	cisco	ios	12.4xp	Yes
Operating System	cisco	ios	12.4xq	Yes
Operating System	cisco	ios	12.4xr	Yes
Operating System	cisco	ios	12.4xt	Yes
Operating System	cisco	ios	12.4xv	Yes
Operating System	cisco	ios	12.4xw	Yes
Operating System	cisco	ios	12.4xy	Yes
Operating System	cisco	ios	12.4xz	Yes
Operating System	cisco	ios	12.4ya	Yes
Operating System	cisco	ios	12.4yb	Yes
Operating System	cisco	ios	12.4yd	Yes
Operating System	cisco	ios	12.4ye	Yes

References

http://osvdb.org/58333 ([email protected])
http://tools.cisco.com/security/center/viewAlert.x?alertId=18893 Vendor Advisory ([email protected])
http://www.cisco.com/en/US/products/products_applied_mitigation_bulletin09186a0080af8113.html Vendor Advisory ([email protected])
http://www.cisco.com/en/US/products/products_security_advisory09186a0080af8115.shtml Vendor Advisory ([email protected])
http://www.cisco.com/web/about/security/intelligence/Cisco_ERP_sep09.html Vendor Advisory ([email protected])
http://www.securitytracker.com/id?1022930 ([email protected])
http://www.vupen.com/english/advisories/2009/2759 ([email protected])
http://osvdb.org/58333 (af854a3a-2127-422b-91ae-364da2661108)
http://tools.cisco.com/security/center/viewAlert.x?alertId=18893 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.cisco.com/en/US/products/products_applied_mitigation_bulletin09186a0080af8113.html Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.cisco.com/en/US/products/products_security_advisory09186a0080af8115.shtml Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.cisco.com/web/about/security/intelligence/Cisco_ERP_sep09.html Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id?1022930 (af854a3a-2127-422b-91ae-364da2661108)
http://www.vupen.com/english/advisories/2009/2759 (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For cisco's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.