Vulnerability Monitor

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CVE-2009-2049

Cisco IOS 12.0(32)S12 through 12.0(32)S13 and 12.0(33)S3 through 12.0(33)S4, 12.0(32)SY8 through 12.0(32)SY9, 12.2(33)SXI1 through 12.2(33)SXI2, 12.2XNC before 12.2(33)XNC2, 12.2XND before 12.2(33)XND1, and 12.4(24)T1; and IOS XE 2.3 through 2.3.1t and 2.4 through 2.4.0; when RFC4893 BGP routing is enabled, allows remote attackers to cause a denial of service (device reload) by using an RFC4271 peer to send a malformed update, aka Bug ID CSCta33973.

Security Impact Summary

CVE-2009-2049 is a security vulnerability that . Impacting 2 products from cisco, 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

2009-07-30T18:30:00.233

Last Modified

2025-04-09T00:30:58.490

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 5.4 (MEDIUM)

CVSSv2 Vector

AV:N/AC:H/Au:N/C:N/I:N/A:C

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

Exploitability Score

4.9

Impact Score

6.9

Weaknesses

Type: Primary
CWE-16

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	cisco	ios	12.0\(32\)s12	Yes
Operating System	cisco	ios	12.0\(32\)s13	Yes
Operating System	cisco	ios	12.0\(32\)sy8	Yes
Operating System	cisco	ios	12.0\(32\)sy9	Yes
Operating System	cisco	ios	12.0\(33\)s3	Yes
Operating System	cisco	ios	12.0\(33\)s4	Yes
Operating System	cisco	ios	12.2\(33\)sxi1	Yes
Operating System	cisco	ios	12.2\(33\)sxi2	Yes
Operating System	cisco	ios	12.2xnc	Yes
Operating System	cisco	ios	12.2xnd	Yes
Operating System	cisco	ios	12.4\(24\)t1	Yes
Operating System	cisco	ios_xe	2.3	Yes
Operating System	cisco	ios_xe	2.3.1t	Yes
Operating System	cisco	ios_xe	2.4	Yes
Operating System	cisco	ios_xe	2.4.0	Yes

References

http://secunia.com/advisories/36046 ([email protected])
http://www.cisco.com/en/US/products/products_security_advisory09186a0080aea4c9.shtml Patch, Vendor Advisory ([email protected])
http://www.securityfocus.com/bid/35860 ([email protected])
http://www.securitytracker.com/id?1022619 ([email protected])
http://www.vupen.com/english/advisories/2009/2082 ([email protected])
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6853 ([email protected])
http://secunia.com/advisories/36046 (af854a3a-2127-422b-91ae-364da2661108)
http://www.cisco.com/en/US/products/products_security_advisory09186a0080aea4c9.shtml Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/35860 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id?1022619 (af854a3a-2127-422b-91ae-364da2661108)
http://www.vupen.com/english/advisories/2009/2082 (af854a3a-2127-422b-91ae-364da2661108)
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6853 (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.