CVEvulnerability

CVE-2021-34699

7.7 HIGH Published 2021-09-23 Modified 2026-06-17 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

Related

Weakness · CWE (2)

  • CWE-435 Improper Interaction Between Multiple Correctly-Behaving Entities weakness
  • CWE-436 Interpretation Conflict weakness

References