High severity · published Aug 5, 2026
CVE-2026-20200
Cisco Integrated Management Controller Argument Injection and Remote Code Execution Vulnerability
8.8
CVSS
0.7%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 54% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CU
Cisco Unified Computing System (Standalone) · Cisco
4.3(1.230097); 4.3(1.230124); 4.3(1.230138); 4.3(2.230207); 4.3(2.230270); 4.3(2.240002); +32 more · source: vendor
UC
Unified Computing System · Cisco
4.3(1.230097); 4.3(1.230124); 4.3(1.230138); 4.3(2.230207); 4.3(2.230270); 4.3(2.240002); +32 more · source: NVD
In the news
VulnerabilityCritical
Critical Cisco IMC bug gives attackers root, PoC is out (CVE-2026-20200)
Cisco has fixed a critical vulnerability (CVE-2026-20200) in its Integrated Management Controller (IMC), which allows an attacker to run commands as root through the controller’s web interface. The fix was part of Cisco’s August 5 advisory batch, and unlike the bugs squashed by the hardening releases for IOS XE and SD-WAN, this one has a public proof-of-concept exploit. AI-discovered flaws in IOS XE and SD-WAN Cisco made available hardening releases addressing critical-severity flaws in Cisco … More →
The post Critical Cisco IMC bug gives attackers root, PoC is out (CVE-2026-20200) appeared first on Help Net Security .
Aug 6, 2026·Help Net Security
Affected product
CU
Cisco Unified Computing System (Standalone)
Cisco
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-20200
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-20200
Vendor Advisory
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cimc-arg-inject-upSHdMfU
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