HIGH
The provider-edge MPLS NAT implementation in Cisco IOS 12.1 through 12.4 and 15.0 through 15.1, and IOS XE 3.1.xSG, allows remote attackers to cause a denial of service (device reload) via a malformed SIP packet to UDP port 5060, aka Bug ID CSCti98219
Published Oct 3, 2011
7.8
HIGHCVSS 2.0
EPSS 2.56%
Description
The provider-edge MPLS NAT implementation in Cisco IOS 12.1 through 12.4 and 15.0 through 15.1, and IOS XE 3.1.xSG, allows remote attackers to cause a denial of service (device reload) via a malformed SIP packet to UDP port 5060, aka Bug ID CSCti98219.
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.
7.8 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.
2.56% 0.02556
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.02556
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 | 2.56% (0.02556) | 84.51th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.56% (0.02556) | 82.97th | v5 (v2026.06.15) |
| Mar 17, 2025 | 1.09% (0.01092) | 76.41th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.56% (0.00563) | 78.47th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.56% (0.00563) | 77.04th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.56% (0.00563) | 74.33th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.14% (0.01136) | 59.45th | v2 (v2022.01.01) |
| Oct 18, 2022 | 1.14% (0.01136) | 58.28th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.14% (0.01136) | 56.27th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.14% (0.01136) | 34.23th | v2 (v2022.01.01) |
Weaknesses (0)
No CWE recorded.
References (3)
- http://tools.cisco.com/security/center/viewAlert.x?alertId=24121 x_refsource_CONFIRMVendor Advisory
- http://www.cisco.com/en/US/products/products_security_advisory09186a0080b95d4d.shtml vendor-advisoryx_refsource_CISCOVendor Advisory
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13781 vdb-entrysignaturex_refsource_OVALThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://tools.cisco.com/security/center/viewAlert.x?alertId=24121 | x_refsource_CONFIRMVendor Advisory | |
| http://www.cisco.com/en/US/products/products_security_advisory09186a0080b95d4d.shtml | vendor-advisoryx_refsource_CISCOVendor Advisory | |
| https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13781 | vdb-entrysignaturex_refsource_OVALThird Party Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner cisco
Published Oct 3, 2011
Updated Aug 6, 2024
Reserved Aug 29, 2011
Link CVE-2011-3279
CISA Vulnrichment
Updated n/a