CVE-2011-4231

Name: CVE-2011-4231
Creator: NVD / NIST
Published: 2012-05-03T10:11:39.687+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.59%

Last modified Jun 16, 2026

CVE-2011-4231 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 0.59% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability

0.59%

43.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Cisco	Ios	15.1
Cisco	Ios	15.2
Cisco	Ios Xe	3.1.0s
Cisco	Ios Xe	3.1.0sg
Cisco	Ios Xe	3.1.1s
Cisco	Ios Xe	3.1.1sg
Cisco	Ios Xe	3.1.2s
Cisco	Ios Xe	3.1.3s
Cisco	Ios Xe	3.1.4s
Cisco	Ios Xe	3.2.0s
Cisco	Ios Xe	3.2.0sg
Cisco	Ios Xe	3.2.1s
Cisco	Ios Xe	3.2.2s
Cisco	Ios Xe	3.3.0s
Cisco	Ios Xe	3.3.1s
Cisco	Ios Xe	3.3.2s
Cisco	Ios Xe	3.3.3s
Cisco	Ios Xe	3.4.0as
Cisco	Ios Xe	3.4.0s
Cisco	Ios Xe	3.4.1s
Cisco	Ios Xe	3.4.2s
Cisco	Ios Xe	3.4.3s
Cisco	Ios Xe	3.5.0s
Cisco	Ios Xe	3.5.1s
Cisco	Ios Xe	3.5.2s

References

http://www.cisco.com/en/US/docs/ios/15_1/release/notes/151-4MCAVS.htmlVendor Advisory
http://www.cisco.com/en/US/docs/ios/ios_xe/3/release/notes/asr1k_caveats_34s.htmlVendor Advisory
http://www.cisco.com/en/US/docs/ios/15_1/release/notes/151-4MCAVS.htmlVendor Advisory
http://www.cisco.com/en/US/docs/ios/ios_xe/3/release/notes/asr1k_caveats_34s.htmlVendor Advisory

Timeline

Published: May 3, 2012
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2011-4231?

How severe is CVE-2011-4231?

Severity scoring for CVE-2011-4231 is pending analysis. The EPSS model estimates a 0.59% probability of exploitation in the next 30 days.

How do I fix CVE-2011-4231?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2011-4231?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST