HIGH
Cisco IOS Firewall Feature set, aka Context Based Access Control (CBAC) or Cisco Secure Integrated Software, for IOS 11.2P through 12.2T does not properly check the IP protocol type, which could allow remote attackers to bypass access control lists
Published Jun 25, 2002
7.5
HIGHCVSS 2.0
EPSS 2.09%
Description
Cisco IOS Firewall Feature set, aka Context Based Access Control (CBAC) or Cisco Secure Integrated Software, for IOS 11.2P through 12.2T does not properly check the IP protocol type, which could allow remote attackers to bypass access control lists.
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.
2.09% 0.02091
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.02091
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 (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.09% (0.02091) | 80.93th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.09% (0.02091) | 79.12th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.58% (0.00577) | 66.92th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.63% (0.00626) | 79.67th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.54% (0.00539) | 76.56th | v3 (v2023.03.01) |
| Apr 23, 2023 | 0.54% (0.00539) | 73.83th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.38% (0.00383) | 68.81th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.21% (0.01213) | 66.61th | v2 (v2022.01.01) |
| Feb 17, 2023 | 1.21% (0.01213) | 66.22th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.21% (0.01213) | 64.21th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.21% (0.01213) | 40.54th | v2 (v2022.01.01) |
Weaknesses (0)
No CWE recorded.
References (5)
- http://www.cisco.com/warp/public/707/IOS-cbac-dynacl-pub.shtml vendor-advisoryx_refsource_CISCOPatchVendor Advisory
- http://www.kb.cert.org/vuls/id/362483 third-party-advisoryx_refsource_CERT-VNUS Government Resource
- http://www.osvdb.org/808 vdb-entryx_refsource_OSVDB
- http://www.securityfocus.com/bid/3588 vdb-entryx_refsource_BID
- https://exchange.xforce.ibmcloud.com/vulnerabilities/7614 vdb-entryx_refsource_XF
| Link | Providers | Tags |
|---|---|---|
| http://www.cisco.com/warp/public/707/IOS-cbac-dynacl-pub.shtml | vendor-advisoryx_refsource_CISCOPatchVendor Advisory | |
| http://www.kb.cert.org/vuls/id/362483 | third-party-advisoryx_refsource_CERT-VNUS Government Resource | |
| http://www.osvdb.org/808 | vdb-entryx_refsource_OSVDB | |
| http://www.securityfocus.com/bid/3588 | vdb-entryx_refsource_BID | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/7614 | vdb-entryx_refsource_XF |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jun 25, 2002
Updated Aug 8, 2024
Reserved Jan 31, 2002
Link CVE-2001-0929
CISA Vulnrichment
Updated n/a