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CVE-2011-4231

MEDIUM · CVSS 6.3EPSS 0.6%EU EUVD

Cisco IOS 15.1 and 15.2 and IOS XE 3.x, when configured as an IPsec hub with X.509 certificates in use, allows remote authenticated users to cause a denial of service (segmentation fault and device crash) via unspecified vectors, aka Bug ID CSCtq61128.

Key facts

CVSS score
6.3 (v2.0)
Severity
MEDIUM
CVSS vector
AV:N/AC:M/Au:S/C:N/I:N/A:C
Weakness (CWE)
CWE-20
EPSS score
0.6% (48th percentile)
In CISA KEV
No
In EU EUVD
Yes (EUVD-2011-4173)
Published
May 3, 2012
NVD last modified
June 16, 2026
Status
Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2011-4173 in the EU Vulnerability Database. Last updated in EUVD on September 16, 2024.

View on the EU Vulnerability Database

Affected products

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