CVE-2011-4231 json
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 t…
published 2012-05-03 14 y ago modified 2026-06-16 4 mo ago also EUVD-2011-4173
- cvss
- 6.3
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 48%
- public exploits
- 0
- none known
Summary
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.
Exploit prediction
0.59% chance of exploitation in the next 30 days, higher than 48% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 6.3 | AV:N/AC:M/Au:S/C:N/I:N/A:C |
Classification
- Weakness
-
- CWE-20 Improper Input Validation
- Technology feeds
References
-
cisco.com
/en/US/docs/ios/ios_xe/3/release/notes/asr1k_caveats_34s.html
vendor-advisory
-
cisco.com
/en/US/docs/ios/15_1/release/notes/151-4MCAVS.html
vendor-advisory
Sources
- CVE List CVE-2011-4231
- NVD CVE-2011-4231
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.