CVEvulnerability
CVE-2021-34699
7.7 HIGH
Official page ↗
- Status
- Modified
- Published
- 2021-09-23
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.7 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
- CVSS 3.1 ([email protected])
- 7.7 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
- CVSS 2.0 ([email protected])
- 6.8 MEDIUM — AV:N/AC:L/Au:S/C:N/I:N/A:C
- Weaknesses
- CWE-435, CWE-436
Description
A vulnerability in the TrustSec CLI parser of Cisco IOS and Cisco IOS XE Software could allow an authenticated, remote attacker to cause an affected device to reload. This vulnerability is due to an improper interaction between the web UI and the CLI parser. An attacker could exploit this vulnerability by requesting a particular CLI command to be run through the web UI. A successful exploit could allow the attacker to cause the device to reload, resulting in a denial of service (DoS) condition.
Affected configurations
• cisco ios 12.2\(6\)i1
• cisco ios 15.0\(1\)sy
• cisco ios 15.0\(1\)sy1
• cisco ios 15.0\(1\)sy2
• cisco ios 15.0\(1\)sy3
• cisco ios 15.0\(1\)sy4
• cisco ios 15.0\(1\)sy5
• cisco ios 15.0\(1\)sy6
• cisco ios 15.0\(1\)sy7
• cisco ios 15.0\(1\)sy7a
• cisco ios 15.0\(1\)sy8
• cisco ios 15.0\(1\)sy9
• cisco ios 15.0\(1\)sy10
• cisco ios 15.0\(2\)ej
• cisco ios 15.0\(2\)ej1
• cisco ios 15.0\(2\)ek
• cisco ios 15.0\(2\)ek1
• cisco ios 15.0\(2\)ex
• cisco ios 15.0\(2\)ex1
• cisco ios 15.0\(2\)ex2
• cisco ios 15.0\(2\)ex3
• cisco ios 15.0\(2\)ex4
• cisco ios 15.0\(2\)ex5
• cisco ios 15.0\(2\)ex6
• cisco ios 15.0\(2\)ex7
• cisco ios 15.0\(2\)ex8
• cisco ios 15.0\(2\)ex10
• cisco ios 15.0\(2\)ex11
• cisco ios 15.0\(2\)ex12
• cisco ios 15.0\(2\)ex13
• cisco ios 15.0\(2\)ey
• cisco ios 15.0\(2\)ey1
• cisco ios 15.0\(2\)ey2
• cisco ios 15.0\(2\)ey3
• cisco ios 15.0\(2\)ez
• cisco ios 15.0\(2\)se
• cisco ios 15.0\(2\)se1
• cisco ios 15.0\(2\)se2
• cisco ios 15.0\(2\)se3
• cisco ios 15.0\(2\)se4
• cisco ios 15.0\(2\)se5
• cisco ios 15.0\(2\)se6
• cisco ios 15.0\(2\)se7
• cisco ios 15.0\(2\)se8
• cisco ios 15.0\(2\)se9
• cisco ios 15.0\(2\)se10
• cisco ios 15.0\(2\)se10a
• cisco ios 15.0\(2\)se11
• cisco ios 15.0\(2\)se12
• cisco ios 15.0\(2\)se13
• cisco ios 15.0\(2\)se13a
• cisco ios 15.0\(2\)se13b
• cisco ios 15.0\(2a\)ex5
• cisco ios 15.0\(2a\)se9
• cisco ios 15.1\(1\)sy
• cisco ios 15.1\(1\)sy1
• cisco ios 15.1\(1\)sy2
• cisco ios 15.1\(1\)sy3
• cisco ios 15.1\(1\)sy4
• cisco ios 15.1\(1\)sy5
… and 774 more