The SSHv2 implementation in Cisco IOS 12.2, 12.4, 15.0, 15.1, and 15.2 and IOS XE 2.3.x through 2.6.x and 3.1.xS through 3.4.xS before 3.4.2S allows remote attackers to cause a denial of service (device reload) via a crafted username in a reverse SSH login attempt, aka Bug ID CSCtr49064
Published Mar 29, 2012
7.8
HIGHCVSS 2.0
EPSS 3.08%
Description
The SSHv2 implementation in Cisco IOS 12.2, 12.4, 15.0, 15.1, and 15.2 and IOS XE 2.3.x through 2.6.x and 3.1.xS through 3.4.xS before 3.4.2S allows remote attackers to cause a denial of service (device reload) via a crafted username in a reverse SSH login attempt, aka Bug ID CSCtr49064.
Affected products
No data.
Configuration 1
Configuration 2
- 2.3
- 2.3.0
- 2.3.1
- 2.3.1t
- 2.3.2
- 2.4
- 2.4.0
- 2.4.1
- 2.4.2
- 2.4.3
- 2.4.4
- 2.5.0
- 2.5.1
- 2.5.2
- 2.6.0
- 2.6.1
- 2.6.2
- 3.1.0s
- 3.1.0sg
- 3.1.1s
- 3.1.1sg
- 3.1.2s
- 3.1.3s
- 3.1.4s
- 3.2.0s
- 3.2.1s
- 3.2.2s
- 3.3.0s
- 3.4.0s
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:N/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.08% (0.03083) | 87.23th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.12% (0.03118) | 86.08th | v5 (v2026.06.15) |
| Mar 17, 2025 | 2.18% (0.02182) | 83.20th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.84% (0.00839) | 82.78th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.84% (0.00839) | 81.52th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.84% (0.00839) | 79.49th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.32% (0.01319) | 71.27th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.32% (0.01319) | 71.23th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.32% (0.01319) | 69.22th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.32% (0.01319) | 44.98th | v2 (v2022.01.01) |
References (7)
- http://osvdb.org/80695 vdb-entryx_refsource_OSVDB
- http://secunia.com/advisories/48609 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/48641 third-party-advisoryx_refsource_SECUNIA
- http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120328-ssh vendor-advisoryx_refsource_CISCOVendor Advisory
- http://www.securityfocus.com/bid/52752 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id?1026866 vdb-entryx_refsource_SECTRACK
- https://exchange.xforce.ibmcloud.com/vulnerabilities/74404 vdb-entryx_refsource_XF
| Link | Providers | Tags |
|---|---|---|
| http://osvdb.org/80695 | vdb-entryx_refsource_OSVDB | |
| http://secunia.com/advisories/48609 | third-party-advisoryx_refsource_SECUNIA | |
| http://secunia.com/advisories/48641 | third-party-advisoryx_refsource_SECUNIA | |
| http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120328-ssh | vendor-advisoryx_refsource_CISCOVendor Advisory | |
| http://www.securityfocus.com/bid/52752 | vdb-entryx_refsource_BID | |
| http://www.securitytracker.com/id?1026866 | vdb-entryx_refsource_SECTRACK | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/74404 | vdb-entryx_refsource_XF |
Change history (0)
No recorded changes yet.