CVE-2021-1136
Last modified
CVE-2021-1136 is a medium-severity vulnerability rated 6.7/10 on the CVSS scale. Multiple vulnerabilities in Cisco Network Convergence System (NCS) 540 Series Routers, only when running Cisco IOS XR NCS540L software images, and Cisco IOS XR Software for the Cisco 8000 Series Routers could allow an authenticated, local attacker to execute unsigned code during the boot process on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.. EPSS estimates a 0.20% chance of exploitation in the next 30 days.
Description
Multiple vulnerabilities in Cisco Network Convergence System (NCS) 540 Series Routers, only when running Cisco IOS XR NCS540L software images, and Cisco IOS XR Software for the Cisco 8000 Series Routers could allow an authenticated, local attacker to execute unsigned code during the boot process on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.
Metrics
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Ios Xr | < 7.0.12 |
| Cisco | Ios Xr | >= 7.1.0, < 7.2.1 |
| Cisco | Ios Xr | < 7.2.1 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
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