The SSHv2 functionality in Cisco IOS 15.2, 15.3, 15.4, and 15.5 and IOS XE 3.6E before 3.6.3E, 3.7E before 3.7.1E, 3.10S before 3.10.6S, 3.11S before 3.11.4S, 3.12S before 3.12.3S, 3.13S before 3.13.3S, and 3.14S before 3.14.1S does not properly implement RSA authentication, which allows remote attackers to obtain login access by leveraging knowledge of a username and the associated public key, aka Bug ID CSCus73013
Published Sep 28, 2015
9.3
HIGHCVSS 2.0
EPSS 4.39%
Description
The SSHv2 functionality in Cisco IOS 15.2, 15.3, 15.4, and 15.5 and IOS XE 3.6E before 3.6.3E, 3.7E before 3.7.1E, 3.10S before 3.10.6S, 3.11S before 3.11.4S, 3.12S before 3.12.3S, 3.13S before 3.13.3S, and 3.14S before 3.14.1S does not properly implement RSA authentication, which allows remote attackers to obtain login access by leveraging knowledge of a username and the associated public key, aka Bug ID CSCus73013.
Affected products
No data.
- 15.2\(1\)sy
- 15.2\(1\)sy0a
- 15.2\(2\)e
- 15.2\(2\)e1
- 15.2\(2\)e2
- 15.2\(2\)ea1
- 15.2\(2a\)e1
- 15.2\(2a\)e2
- 15.2\(3\)e
- 15.2\(3\)ea
- 15.2\(3a\)e
- 15.3\(3\)m1
- 15.3\(3\)m2
- 15.3\(3\)m3
- 15.3\(3\)m4
- 15.3\(3\)m5
- 15.3\(3\)s
- 15.3\(3\)s1
- 15.3\(3\)s1a
- 15.3\(3\)s2
- 15.3\(3\)s3
- 15.3\(3\)s4
- 15.3\(3\)s5
- 15.4\(1\)cg
- 15.4\(1\)cg1
- 15.4\(1\)s
- 15.4\(1\)s1
- 15.4\(1\)s2
- 15.4\(1\)s3
- 15.4\(1\)t
- 15.4\(1\)t1
- 15.4\(1\)t2
- 15.4\(1\)t3
- 15.4\(2\)cg
- 15.4\(2\)s
- 15.4\(2\)s1
- 15.4\(2\)s2
- 15.4\(2\)t
- 15.4\(2\)t1
- 15.4\(2\)t2
- 15.4\(3\)m
- 15.4\(3\)m1
- 15.4\(3\)m2
- 15.4\(3\)s
- 15.4\(3\)s1
- 15.4\(3\)s2
- 15.5\(1\)s
- 15.5\(1\)t
- 3.6e.0
- 3.6e.0a
- 3.6e.0b
- 3.6e.1
- 3.6e.2
- 3.6e.2a
- 3.7e.0
- 3.10s.0
- 3.10s.0a
- 3.10s.01
- 3.10s.1
- 3.10s.2
- 3.10s.3
- 3.10s.4
- 3.10s.5
- 3.11s.0
- 3.11s.1
- 3.11s.2
- 3.11s.3
- 3.12s.0
- 3.12s.1
- 3.12s.2
- 3.13s.0
- 3.13s.1
- 3.13s.2
- 3.14s.0
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:M/Au:N/C:C/I:C/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 | 4.39% (0.04388) | 91.00th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.39% (0.04388) | 90.02th | v5 (v2026.06.15) |
| Mar 17, 2025 | 1.54% (0.01542) | 80.08th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.45% (0.00448) | 75.86th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.45% (0.00448) | 74.29th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.45% (0.00448) | 71.06th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.14% (0.01136) | 59.45th | v2 (v2022.01.01) |
| Oct 18, 2022 | 1.14% (0.01136) | 58.28th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.14% (0.01136) | 56.27th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.14% (0.01136) | 34.23th | v2 (v2022.01.01) |
References (3)
- http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150923-sshpk vendor-advisoryx_refsource_CISCOVendor Advisory
- http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150923-sshpk/cvrf/cisco-sa-20150923-sshpk_cvrf.xml x_refsource_CONFIRMVendor Advisory
- http://www.securitytracker.com/id/1033646 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
| Link | Providers | Tags |
|---|---|---|
| http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150923-sshpk | vendor-advisoryx_refsource_CISCOVendor Advisory | |
| http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150923-sshpk/cvrf/cisco-sa-20150923-sshpk_cvrf.xml | x_refsource_CONFIRMVendor Advisory | |
| http://www.securitytracker.com/id/1033646 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry |
Change history (0)
No recorded changes yet.