HIGH
Memory leak in Cisco Catalyst 4000, 5000, and 6000 series switches allows remote attackers to cause a denial of service via a series of failed telnet authentication attempts
Published May 7, 2001
7.8
HIGHCVSS 2.0
EPSS 12.14%
Description
Memory leak in Cisco Catalyst 4000, 5000, and 6000 series switches allows remote attackers to cause a denial of service via a series of failed telnet authentication attempts.
Affected products
No data.
OR
- 4.5\(2\)
- 4.5\(3\)
- 4.5\(4\)
- 4.5\(5\)
- 4.5\(6\)
- 4.5\(7\)
- 4.5\(8\)
- 4.5\(9\)
- 5.1
- 5.1\(1\)
- 5.1\(1a\)
- 5.1\(2a\)
- 5.2
- 5.2\(1\)
- 5.2\(1a\)
- 5.2\(2\)
- 5.2\(3\)
- 5.2\(4\)
- 5.2\(5\)
- 5.2\(6\)
- 5.2\(7\)
- 5.3\(1\)csx
- 5.3\(1a\)csx
- 5.3\(2\)csx
- 5.3\(3\)csx
- 5.3\(4\)csx
- 5.3\(5\)csx
- 5.3\(5a\)csx
- 5.3\(6\)csx
- 5.4
- 5.4\(1\)
- 5.4\(2\)
- 5.4\(3\)
- 5.4\(4\)
- 5.5
- 5.5\(1\)
- 5.5\(2\)
- 5.5\(3\)
- 5.5\(4\)
- 5.5\(4a\)
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.
7.8 HIGH NVD
AV:N/AC:L/Au:N/C:N/I:N/A:C
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Complete
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
12.14% 0.12137
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.12137
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 1, 2026 | 12.14% (0.12137) | 96.04th | v5 (v2026.06.15) |
| Jun 15, 2026 | 12.14% (0.12137) | 95.61th | v5 (v2026.06.15) |
| Mar 30, 2025 | 12.17% (0.12167) | 93.21th | v4 (v2025.03.14) |
| Mar 29, 2025 | 14.30% (0.14302) | 90.69th | v4 (v2025.03.14) |
| Mar 19, 2025 | 12.17% (0.12167) | 92.96th | v4 (v2025.03.14) |
| Mar 17, 2025 | 9.11% (0.09111) | 92.06th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.76% (0.00755) | 81.73th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.76% (0.00755) | 80.46th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.76% (0.00755) | 78.15th | v3 (v2023.03.01) |
| Mar 6, 2023 | 4.19% (0.04187) | 87.39th | v2 (v2022.01.01) |
| Apr 1, 2022 | 4.19% (0.04187) | 86.11th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.19% (0.04187) | 69.86th | v2 (v2022.01.01) |
Weaknesses (1)
References (4)
- http://www.cisco.com/warp/public/707/catalyst-memleak-pub.shtml vendor-advisoryx_refsource_CISCOPatchVendor Advisory
- http://www.osvdb.org/801 vdb-entryx_refsource_OSVDB
- http://www.securityfocus.com/bid/2072 vdb-entryx_refsource_BIDPatchVendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/5656 vdb-entryx_refsource_XF
| Link | Providers | Tags |
|---|---|---|
| http://www.cisco.com/warp/public/707/catalyst-memleak-pub.shtml | vendor-advisoryx_refsource_CISCOPatchVendor Advisory | |
| http://www.osvdb.org/801 | vdb-entryx_refsource_OSVDB | |
| http://www.securityfocus.com/bid/2072 | vdb-entryx_refsource_BIDPatchVendor Advisory | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/5656 | vdb-entryx_refsource_XF |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published May 7, 2001
Updated Aug 8, 2024
Reserved Feb 1, 2001
Link CVE-2001-0041
CISA Vulnrichment
Updated n/a