The Cisco Intrusion Prevention System (IPS) and IOS with Firewall/IPS Feature Set do not properly handle certain full-width and half-width Unicode character encodings, which might allow remote attackers to evade detection of HTTP traffic
Published May 16, 2007
7.8
HIGHCVSS 2.0
EPSS 2.98%
Description
The Cisco Intrusion Prevention System (IPS) and IOS with Firewall/IPS Feature Set do not properly handle certain full-width and half-width Unicode character encodings, which might allow remote attackers to evade detection of HTTP traffic.
Affected products
No data.
Configuration 1
- 4.0
- 5.0\(1\)
- 5.0\(2\)
- 5.0\(6\)p1
- 5.1\(1\)
- 5.1\(1a\)
- 5.1\(1b\)
- 5.1\(1c\)
- 5.1\(1d\)
- 5.1\(1e\)
- 5.1\(p1\)
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 (16 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.98% (0.02976) | 86.79th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.98% (0.02976) | 85.45th | v5 (v2026.06.15) |
| Jun 9, 2026 | 5.50% (0.05504) | 90.42th | v4 (v2025.03.14) |
| Mar 30, 2025 | 3.82% (0.03824) | 87.06th | v4 (v2025.03.14) |
| Mar 29, 2025 | 5.86% (0.05863) | 83.84th | v4 (v2025.03.14) |
| Mar 17, 2025 | 3.82% (0.03824) | 87.36th | v4 (v2025.03.14) |
| Dec 12, 2024 | 5.37% (0.05367) | 93.41th | v3 (v2023.03.01) |
| Jul 11, 2024 | 5.37% (0.05367) | 93.17th | v3 (v2023.03.01) |
| Apr 26, 2024 | 4.74% (0.04744) | 92.57th | v3 (v2023.03.01) |
| Mar 19, 2024 | 4.55% (0.04554) | 92.30th | v3 (v2023.03.01) |
| Feb 10, 2024 | 3.45% (0.03448) | 91.15th | v3 (v2023.03.01) |
| Oct 17, 2023 | 2.49% (0.02492) | 88.87th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.46% (0.02462) | 88.33th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.17% (0.02172) | 80.77th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.17% (0.02172) | 78.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.17% (0.02172) | 57.73th | v2 (v2022.01.01) |
No CWE recorded.
References (12)
- http://secunia.com/advisories/25285 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://www.cisco.com/en/US/products/products_security_response09186a008083f82e.html vendor-advisoryx_refsource_CISCO
- http://www.gamasec.net/english/gs07-01.html x_refsource_MISC
- http://www.kb.cert.org/vuls/id/739224 third-party-advisoryx_refsource_CERT-VNUS Government Resource
- http://www.osvdb.org/35336 vdb-entryx_refsource_OSVDB
- http://www.securityfocus.com/archive/1/468633/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/23980 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id?1018053 vdb-entryx_refsource_SECTRACK
- http://www.securitytracker.com/id?1018054 vdb-entryx_refsource_SECTRACK
- http://www.vupen.com/english/advisories/2007/1803 vdb-entryx_refsource_VUPEN
- https://exchange.xforce.ibmcloud.com/vulnerabilities/34277 vdb-entryx_refsource_XF
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5465 vdb-entrysignaturex_refsource_OVAL
Change history (0)
No recorded changes yet.