CVE-2021-1443

highpriority · track · 30EPSS 0.023 · 84 %ileEURUUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
2.34% (84th) EPSS
CVSS 8.5 · high
Is it mine?
136 products
Check your exposure
Who says so?
5 sources
cnnvd · enisa_euvd · fstec_bdu · cisa_csaf_ot

EPSS · scored 2026-10-27

A vulnerability in the web UI of Cisco IOS XE Software could allow an authenticated, remote attacker to execute arbitrary code with root privileges on the underlying operating system of an affected device. The vulnerability exists because the affected software improperly sanitizes values that are parsed from a specific configuration file. An attacker could exploit this vulnerability by tampering with a specific configuration file and then sending an API call. A successful exploit could allow the attacker to inject arbitrary code that would be executed on the underlying operating system of the affected device. To exploit this vulnerability, the attacker would need to have a privileged set of credentials to the device.

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

02

cvss

Technical severity, 0–10. One row per scoring source.

8.5
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5.5–8.5

v2.08.5highAV:N/AC:M/Au:S/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 6.8 · impact 10
v3.17.2highCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.2 · impact 5.9
v3.06.8mediumCVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · CISA US
v3.15.5mediumAV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:Nsecondary · FSTEC (BDU) RU
v3.15.5mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:Nsecondary · ENISA EU
v3.15.5mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:Nsecondary · psirt@cisco.com USexploitability 1.2 · impact 4.2
v3.16.6mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)
v3.15.5mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:Nsecondary · Cisco PSIRT US
03

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS
04

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-78USprimaryCWE-77USCWE-77USCWE-77US
05

affected products (136)

Products and version ranges known to be affected.

showing 20 of 136
06

advisories (2)

Vendor and ecosystem advisories describing this.

  • cisco-sa-ios-xe-os-cmd-inj-Ef6TV5e9Cisco IOS XE Software Web UI OS Command Injection Vulnerability2021-03-24csaf · cisco_csafUS

    A vulnerability in the web UI of Cisco IOS XE Software could allow an authenticated, remote attacker to execute arbitrary code with root privileges on the underlying operating system of an affected device. The vulnerability exists because the affected software improperly sanitizes values that are parsed from a specific configuration file. An attacker could exploit this vulnerability by tampering with a specific configuration file and then sending an API call. A successful exploit could allow the attacker to inject arbitrary code that would be executed on the underlying operating system of the affected device. To exploit this vulnerability, the attacker would need to have a privileged set of credentials to the device. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

  • ICSA-21-110-02ICSA-21-110-02_Rockwell Automation Stratix Switches2021-04-20icsa · cisa_csaf_otUS

    Cisco reported these vulnerabilities to Rockwell Automation.

07

also known as (4)

Other names and identifiers for this entity.

08

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bducisa_csaf_otcisco_csafNVDCVE.orgMITRE
published 2021-03-24modified 2026-06-17
10

references (6)

External citations — patches, advisories, analysis.

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