CVE-2023-20273

Known Exploited Vulnerability Entry External Catalog

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Entry Details

CVE-2023-20273

Confirmed

Yes

2023-10-23 00:00 UTC

Timestamps

2023-10-23

2023-10-23

Scope

KEV entry: Cisco IOS XE Web UI Command Injection Vulnerability | Affected: Cisco / Cisco IOS XE Web UI | Description: Cisco IOS XE contains a command injection vulnerability in the web user interface. When chained with CVE-2023-20198, the attacker can leverage the new local user to elevate privilege to root and write the implant to the file system. Cisco identified CVE-2023-20273 as the vulnerability exploited to deploy the implant. CVE-2021-1435, previously associated with the exploitation events, is no longer believed to be related to this activity. | Required action: Verify that instances of Cisco IOS XE Web UI are in compliance with BOD 23-02 and apply mitigations per vendor instructions. For affected products (Cisco IOS XE Web UI exposed to the internet or to untrusted networks), follow vendor instructions to determine if a system may have been compromised and immediately report positive findings to CISA. | Due date: 2023-10-27 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-webui-privesc-j22SaA4z; https://nvd.nist.gov/vuln/detail/CVE-2023-20273

References
  • {'id': 'CVE-2023-20273', 'url': 'https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2023-20273'}

b20afb65-0745-4292-9fae-3d42ff6b77d2

405284c2-e461-4670-8979-7fd2c9755a60

2026-02-02 12:26 UTC

2026-02-02 12:26 UTC

Evidence (1)
Type Source Signal Confidence Details GCVE Metadata
vendor_report cisa-kev successful_exploitation 0.80
View details 
{
  "cwes": [
    "CWE-78"
  ],
  "date_added": "2023-10-23",
  "due_date": "2023-10-27",
  "feed": "CISA Known Exploited Vulnerabilities Catalog",
  "knownRansomwareCampaignUse": "Unknown",
  "product": "Cisco IOS XE Web UI",
  "vendorProject": "Cisco",
  "vulnerabilityName": "Cisco IOS XE Web UI Command Injection Vulnerability"
}
 -
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