HIGH
The IOS HTTP service in Cisco routers and switches running IOS 11.1 through 12.1 allows remote attackers to cause a denial of service by requesting a URL that contains a %% string
Published Jul 12, 2000
7.1
HIGHCVSS 2.0
EPSS 35.00%
Description
The IOS HTTP service in Cisco routers and switches running IOS 11.1 through 12.1 allows remote attackers to cause a denial of service by requesting a URL that contains a %% string.
Affected products
No data.
OR
- 11.1
- 11.2
- 11.2\(4\)f1
- 11.2\(8\)
- 11.2\(8\)p
- 11.2\(9\)p
- 11.2\(9\)xa
- 11.2\(10\)
- 11.2\(10\)bc
- 11.2\(17\)
- 11.2p
- 11.3
- 11.3\(1\)
- 11.3\(1\)ed
- 11.3\(1\)t
- 11.3t
- 12.0
- 12.0\(1\)w
- 12.0\(1\)xa3
- 12.0\(1\)xb
- 12.0\(1\)xe
- 12.0\(2\)
- 12.0\(2\)xc
- 12.0\(2\)xd
- 12.0\(2\)xf
- 12.0\(2\)xg
- 12.0\(3\)t2
- 12.0\(4\)
- 12.0\(4\)s
- 12.0\(4\)t
- 12.0\(5\)
- 12.0\(5\)t1
- 12.0\(6\)
- 12.0\(7\)t
- 12.0\(8\)
- 12.0\(9\)s
- 12.0db
- 12.0s
- 12.0t
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.
7.1 HIGH NVD
AV:N/AC:M/Au:N/C:N/I:N/A:C
Access Vector Network
Access Complexity Medium
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.
35.00% 0.35005
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.35005
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 | 35.00% (0.35005) | 98.39th | v5 (v2026.06.15) |
| Jun 15, 2026 | 35.00% (0.35005) | 98.22th | v5 (v2026.06.15) |
| Mar 30, 2025 | 85.12% (0.85118) | 99.30th | v4 (v2025.03.14) |
| Mar 29, 2025 | 82.89% (0.82893) | 99.06th | v4 (v2025.03.14) |
| Mar 17, 2025 | 85.12% (0.85118) | 99.31th | v4 (v2025.03.14) |
| Dec 12, 2024 | 95.97% (0.95969) | 99.55th | v3 (v2023.03.01) |
| Feb 8, 2024 | 95.97% (0.95969) | 99.40th | v3 (v2023.03.01) |
| Mar 7, 2023 | 96.75% (0.96755) | 99.39th | v3 (v2023.03.01) |
| Mar 6, 2023 | 78.83% (0.78829) | 99.47th | v2 (v2022.01.01) |
| Feb 4, 2022 | 78.83% (0.78829) | 99.36th | v2 (v2022.01.01) |
Weaknesses (1)
References (4)
- http://archives.neohapsis.com/archives/bugtraq/2000-04/0261.html mailing-listx_refsource_BUGTRAQ
- http://www.cisco.com/warp/public/707/ioshttpserver-pub.shtml vendor-advisoryx_refsource_CISCO
- http://www.osvdb.org/1302 vdb-entryx_refsource_OSVDB
- http://www.securityfocus.com/bid/1154 vdb-entryx_refsource_BID
| Link | Providers | Tags |
|---|---|---|
| http://archives.neohapsis.com/archives/bugtraq/2000-04/0261.html | mailing-listx_refsource_BUGTRAQ | |
| http://www.cisco.com/warp/public/707/ioshttpserver-pub.shtml | vendor-advisoryx_refsource_CISCO | |
| http://www.osvdb.org/1302 | vdb-entryx_refsource_OSVDB | |
| http://www.securityfocus.com/bid/1154 | vdb-entryx_refsource_BID |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jul 12, 2000
Updated Aug 8, 2024
Reserved Jun 14, 2000
Link CVE-2000-0380
CISA Vulnrichment
Updated n/a