Vulnerability in Cisco Unified Computing System (Standalone)
CVE-2026-20200
A vulnerability in the web-based management interface of Cisco IMC could allow an authenticated, remote attacker with low privileges to execute arbitrary commands on the underlying operating system of an affected system and elevate privileges to root. This vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by entering crafted inputs to the web-based management interface of the affected software. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system as the root user.
EPSS: 0.057 (92.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Cisco Unified Computing System (Standalone) — versions 4.3(1.230097), 4.3(1.230124), 4.3(1.230138)
- Cisco Unified_computing_system — versions 4.3(1.230097), 4.3(1.230124), 4.3(1.230138)
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cisco-sa-cimc-arg-inject-upSHdMfU (Vendor Advisory)
Frequently asked questions
- What is CVE-2026-20200?
- CVE-2026-20200 is a high-severity vulnerability in Cisco Unified Computing System (Standalone), classified under CWE-141. CVSS score: 8.8/10. Published 2026-08-05.
- How severe is CVE-2026-20200?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2026-20200 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.