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CVE-2009-1168

HIGH · CVSS 7.1EPSS 2.5%EU EUVD

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, 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 (memory corruption and device reload) by using an RFC4271 peer to send an update with a long series of AS numbers, aka Bug ID CSCsy86021.

Key facts

CVSS score
7.1 (v2.0)
Severity
HIGH
CVSS vector
AV:N/AC:M/Au:N/C:N/I:N/A:C
Weakness (CWE)
CWE-399
EPSS score
2.5% (84th percentile)
In CISA KEV
No
In EU EUVD
Yes (EUVD-2009-1168)
Published
July 30, 2009
NVD last modified
June 16, 2026
Status
Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2009-1168 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

  • cisco / ios
  • cisco / ios
  • cisco / ios
  • cisco / ios
  • cisco / ios
  • cisco / ios
  • cisco / ios
  • cisco / ios
  • cisco / ios
  • cisco / ios
  • cisco / ios
  • cisco / ios xe
  • cisco / ios xe
  • cisco / ios xe
  • cisco / ios xe

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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