HIGH
Cisco IOS 12.2T, 12.3 and 12.3T, when using Easy VPN Server XAUTH version 6 authentication, allows remote attackers to bypass authentication via a "malformed packet."
Published Apr 12, 2005
7.5
HIGHCVSS 2.0
EPSS 1.44%
Description
Cisco IOS 12.2T, 12.3 and 12.3T, when using Easy VPN Server XAUTH version 6 authentication, allows remote attackers to bypass authentication via a "malformed packet."
Affected products
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.
7.5 HIGH NVD
AV:N/AC:L/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
1.44% 0.01444
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
EPSS probability 0.01444
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 (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 1.44% (0.01444) | 72.33th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.44% (0.01444) | 69.72th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.57% (0.00572) | 66.75th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.52% (0.00517) | 77.51th | v3 (v2023.03.01) |
| Mar 19, 2024 | 0.52% (0.00517) | 76.25th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.47% (0.00474) | 74.95th | v3 (v2023.03.01) |
| Aug 2, 2023 | 0.47% (0.00474) | 72.44th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.64% (0.00638) | 75.89th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.05% (0.01055) | 52.13th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.05% (0.01055) | 50.47th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.05% (0.01055) | 48.43th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.05% (0.01055) | 27.52th | v2 (v2022.01.01) |
Weaknesses (0)
No CWE recorded.
References (2)
- http://www.cisco.com/warp/public/707/cisco-sa-20050406-xauth.shtml vendor-advisoryx_refsource_CISCOVendor Advisory
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5852 vdb-entrysignaturex_refsource_OVAL
| Link | Providers | Tags |
|---|---|---|
| http://www.cisco.com/warp/public/707/cisco-sa-20050406-xauth.shtml | vendor-advisoryx_refsource_CISCOVendor Advisory | |
| https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5852 | vdb-entrysignaturex_refsource_OVAL |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Apr 12, 2005
Updated Aug 7, 2024
Reserved Apr 12, 2005
Link CVE-2005-1057
CISA Vulnrichment
Updated n/a