Cyber Resilience

CVE-2026-20200

Published
05 August 2026
Modified
06 August 2026
CVSS Score v3.1 8.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0084 55th percentile
Risk Priority 65 floored blend · peak EPSS

Summary

CVE-2026-20200 is a high-severity Improper Neutralization of Parameter/Argument Delimiters (CWE-141) vulnerability in Cisco IMC (inferred from references). Its CVSS base score is 8.8 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Command and Scripting Interpreter (T1059); ranked in the top 45% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to SI-10 (Information Input Validation) — see the control section below for these in your framework.

EU & UK References

Vulnerability Data

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…

more

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. 

CWE(s)
CWE-141

Related Threats

MITRE ATT&CK Enterprise Techniques

T1059 Command and Scripting Interpreter Execution
Adversaries may abuse command and script interpreters to execute commands, scripts, or binaries.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2025-20338Shared CWE-141
CVE-2026-56813Shared CWE-141
CVE-2024-0840Shared CWE-141
CVE-2023-28815Shared CWE-141
CVE-2025-31329Shared CWE-141
CVE-2026-19594Shared CWE-141

Affected Assets

Cisco
IMC
inferred from references and description; NVD did not file a CPE for this CVE

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-10 Information Input Validation good match

Input validation directly requires checking and neutralizing delimiter characters in received data before forwarding to downstream components.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly require input neutralization to prevent delimiter injection.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing can detect delimiter issues but does not itself implement the neutralization.

A.8.25 Secure development life cycle partial match
prevents

Secure development life cycle mandates input validation and sanitization that directly prevents delimiter injection.

A.8.26 Application security requirements partial match
prevents

Application security requirements explicitly call for neutralizing special characters in inputs passed to downstream components.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure system architecture principles encourage safe interfaces but do not prescribe delimiter neutralization.

A.8.28 Secure coding partial match
prevents

Secure coding standards require proper escaping or neutralization of parameter delimiters in all downstream calls.

References