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CVE-2023-20198: Cisco IOS XE Web UI Privilege Escalation Vulnerability

criticalknown exploitedpublic exploitCVE-2023-20198
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Cisco IOS XE Web UI contains a privilege escalation vulnerability in the web user interface that could allow a remote, unauthenticated attacker to create an account with privilege level 15 access. The attacker can then use that account to gain control of the affected device.

CSIRTS triage

vendor: Ciscoproduct: IOS XEPrivilege escalation
What
Cisco IOS XE Web UI contains a privilege escalation vulnerability that could allow a remote, unauthenticated attacker to create an account with privilege level 15 access.
Who is affected
Deployments of Cisco IOS XE with the web UI enabled.
Urgency
Remediation is urgent due to active exploitation and critical severity.
Action
Apply the latest security updates to address this vulnerability.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2023-10-16
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2023-20198

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2023-20198coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for Cisco IOS XE

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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