Cisco IOS XR Software Release 7.9.2 Denial of Service Vulnerabillity
Published Mar 12, 2025
7.4
HIGHCVSS 3.1
EPSS 0.24%
Description
A vulnerability in the handling of specific packets that are punted from a line card to a route processor in Cisco IOS XR Software Release 7.9.2 could allow an unauthenticated, adjacent attacker to cause control plane traffic to stop working on multiple Cisco IOS XR platforms. This vulnerability is due to incorrect handling of packets that are punted to the route processor. An attacker could exploit this vulnerability by sending traffic, which must be handled by the Linux stack on the route processor, to an affected device. A successful exploit could allow the attacker to cause control plane traffic to stop working, resulting in a denial of service (DoS) condition.
Affected products
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- Version 7.9.2StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
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| Cisco | Cisco IOS XR Software | n/a |
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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.
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Mar 21, 2025 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2025–2026- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (4 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.24% (0.00236) | 13.26th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.23% (0.00227) | 13.17th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.02% (0.00019) | 2.79th | v4 (v2025.03.14) |
| Mar 13, 2025 | 0.04% (0.00044) | 15.47th | v3 (v2023.03.01) |
References (2)
- https://blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp/ Product
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-xr792-bWfVDPY Vendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp/ | Product | |
| https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-xr792-bWfVDPY | Vendor Advisory |
Change history (0)
No recorded changes yet.