CVEvulnerability

CVE-2021-1136

6.7 MEDIUM Published 2021-02-04 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-02-04
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.7 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 ([email protected])
6.7 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
4.6 MEDIUM — AV:L/AC:L/Au:N/C:P/I:P/A:P
Weaknesses
CWE-347

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.

Affected configurations

• cisco ios xr (< 7.0.12) • cisco ios xr (>= 7.1.0 < 7.2.1) • cisco ios xr (< 7.2.1)

Related

Weakness · CWE (1)

  • CWE-347 Improper Verification of Cryptographic Signature weakness

References