Cisco IMC Web UI Command Injection Allowing OS Root Privilege Escalation
CVE-2026-20288 Published on August 5, 2026
Cisco IMC Remote Code Execution Vulnerability Remote Code Execution Vulnerability
A vulnerability in the web-based management interface of Cisco IMC could allow an authenticated, remote attacker with Admin 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.
Cisco has assigned this vulnerability a SIR of High rather than Medium as the score indicates because additional security implications could occur when the attacker becomes root.
Vulnerability Analysis
CVE-2026-20288 is exploitable with network access, and requires user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality and integrity, and no impact on availability.
Weakness Type
Improper Neutralization of Expression/Command Delimiters
The software receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could be interpreted as expression or command delimiters when they are sent to a downstream component. As data is parsed, an injected/absent/malformed delimiter may cause the process to take unexpected actions.
Products Associated with CVE-2026-20288
Want to know whenever a new CVE is published for Cisco Unified Computing System? stack.watch will email you.
Affected Versions
Cisco Unified Computing System (Standalone):- Version 4.0(2g) is affected.
- Version 3.1(2i) is affected.
- Version 3.1(1d) is affected.
- Version 4.0(4i) is affected.
- Version 4.1(1c) is affected.
- Version 4.0(2c) is affected.
- Version 4.0(1e) is affected.
- Version 4.0(2h) is affected.
- Version 4.0(4h) is affected.
- Version 4.0(1h) is affected.
- Version 4.0(2l) is affected.
- Version 3.1(3g) is affected.
- Version 4.0(1.240) is affected.
- Version 4.0(2f) is affected.
- Version 4.0(1g) is affected.
- Version 4.0(2i) is affected.
- Version 3.1(3i) is affected.
- Version 4.0(4d) is affected.
- Version 4.1(1d) is affected.
- Version 3.1(3c) is affected.
- Version 4.0(4k) is affected.
- Version 3.1(2d) is affected.
- Version 3.1(3a) is affected.
- Version 3.1(3j) is affected.
- Version 4.0(2d) is affected.
- Version 4.1(1f) is affected.
- Version 4.0(4j) is affected.
- Version 4.0(2m) is affected.
- Version 4.0(2k) is affected.
- Version 4.0(1c) is affected.
- Version 4.0(4f) is affected.
- Version 4.0(4c) is affected.
- Version 3.1(3d) is affected.
- Version 3.1(2g) is affected.
- Version 3.1(2c) is affected.
- Version 4.0(1d) is affected.
- Version 3.1(2e) is affected.
- Version 4.0(1a) is affected.
- Version 4.0(1b) is affected.
- Version 3.1(3b) is affected.
- Version 4.0(4b) is affected.
- Version 3.1(2b) is affected.
- Version 4.0(4e) is affected.
- Version 3.1(3h) is affected.
- Version 4.0(4l) is affected.
- Version 4.1(1g) is affected.
- Version 4.1(2a) is affected.
- Version 4.0(2n) is affected.
- Version 4.1(1h) is affected.
- Version 3.1(3k) is affected.
- Version 4.1(2b) is affected.
- Version 4.0(2o) is affected.
- Version 4.0(4m) is affected.
- Version 4.1(2d) is affected.
- Version 4.1(3b) is affected.
- Version 4.0(2p) is affected.
- Version 4.1(2e) is affected.
- Version 4.1(2f) is affected.
- Version 4.0(4n) is affected.
- Version 4.0(2q) is affected.
- Version 4.1(3c) is affected.
- Version 4.0(2r) is affected.
- Version 4.1(3d) is affected.
- Version 4.1(2g) is affected.
- Version 4.1(2h) is affected.
- Version 4.1(3g) is affected.
- Version 4.1(3f) is affected.
- Version 4.1(2j) is affected.
- Version 4.1(2k) is affected.
- Version 4.1(3h) is affected.
- Version 4.2(2a) is affected.
- Version 4.1(3i) is affected.
- Version 4.2(2f) is affected.
- Version 4.2(2g) is affected.
- Version 4.2(3b) is affected.
- Version 4.1(3l) is affected.
- Version 4.2(3d) is affected.
- Version 4.3(1.230097) is affected.
- Version 4.2(1e) is affected.
- Version 4.2(1b) is affected.
- Version 4.2(1j) is affected.
- Version 4.2(1i) is affected.
- Version 4.2(1f) is affected.
- Version 4.2(1a) is affected.
- Version 4.2(1c) is affected.
- Version 4.2(1g) is affected.
- Version 4.3(1.230124) is affected.
- Version 4.1(2l) is affected.
- Version 4.2(3e) is affected.
- Version 4.3(1.230138) is affected.
- Version 4.2(3g) is affected.
- Version 4.3(2.230207) is affected.
- Version 4.2(3h) is affected.
- Version 4.2(3i) is affected.
- Version 4.3(2.230270) is affected.
- Version 4.1(3m) is affected.
- Version 4.1(2m) is affected.
- Version 4.3(2.240002) is affected.
- Version 4.3(3.240022) is affected.
- Version 4.2(3j) is affected.
- Version 4.1(3n) is affected.
- Version 4.3(2.240009) is affected.
- Version 4.3(3.240041) is affected.
- Version 4.2(3k) is affected.
- Version 4.3(3.240043) is affected.
- Version 4.3(4.240142) is affected.
- Version 4.3(2.240037) is affected.
- Version 4.3(2.240053) is affected.
- Version 4.3(4.240152) is affected.
- Version 4.2(3l) is affected.
- Version 4.3(2.240077) is affected.
- Version 4.3(4.242028) is affected.
- Version 4.3(4.241063) is affected.
- Version 4.3(4.242038) is affected.
- Version 4.2(3m) is affected.
- Version 4.3(2.240090) is affected.
- Version 4.3(5.240021) is affected.
- Version 4.3(2.240107) is affected.
- Version 4.3(4.242066) is affected.
- Version 4.2(3n) is affected.
- Version 4.3(5.250001) is affected.
- Version 4.2(3o) is affected.
- Version 4.3(2.250016) is affected.
- Version 4.3(2.250021) is affected.
- Version 4.3(5.250030) is affected.
- Version 4.3(2.250022) is affected.
- Version 4.3(6.250039) is affected.
- Version 4.3(6.250040) is affected.
- Version 4.3(5.250033) is affected.
- Version 4.3(6.250044) is affected.
- Version 4.3(6.250053) is affected.
- Version 4.3(2.250037) is affected.
- Version 4.3(2.250045) is affected.
- Version 4.3(4.252001) is affected.
- Version 4.3(4.252002) is affected.
- Version 6.0(1.250127) is affected.
- Version 4.2(3p) is affected.
- Version 6.0(1.250131) is affected.
- Version 4.3(6.250101) is affected.
- Version 6.0(1.250174) is affected.
- Version 4.3(6.250117) is affected.
- Version 4.3(5.250043) is affected.
- Version 4.3(5.250045) is affected.
- Version 4.3(6.250060) is affected.
- Version 6.0(1.250130) is affected.
- Version 4.3(4.241014) is affected.
- Version 4.3(2.250063) is affected.
- Version 6.0(1.250192) is affected.
- Version 4.3(6.260003) is affected.
- Version 6.0(1.250194) is affected.
- Version 4.3(6.260017) is affected.
- Version 4.3(2.260007) is affected.
- Version 6.0(2.260044) is affected.
- Version 6.0(2.260069) is affected.
- Version 4.3(6.260033) is affected.
- Version 4.2(3q) is affected.
- Version 3.2.7 is affected.
- Version 3.2.6 is affected.
- Version 3.2.4 is affected.
- Version 3.2.10 is affected.
- Version 3.2.2 is affected.
- Version 3.2.3 is affected.
- Version 3.2.1 is affected.
- Version 3.2.11.1 is affected.
- Version 3.2.8 is affected.
- Version 3.1.1 is affected.
- Version 3.1.2 is affected.
- Version 3.1.4 is affected.
- Version 3.1.3 is affected.
- Version 3.1.5 is affected.
- Version 3.1.0 is affected.
- Version 3.2.11.3 is affected.
- Version 3.2.11.5 is affected.
- Version 3.2.12.2 is affected.
- Version 3.2.13.6 is affected.
- Version 3.2.14 is affected.
- Version 4.11.1 is affected.
- Version 3.2.15 is affected.
- Version 4.12.1 is affected.
- Version 3.2.15.3 is affected.
- Version 4.12.2 is affected.
- Version 3.2.16.1 is affected.
- Version 4.15.2 is affected.
- Version 3.2.17.1 is affected.
- Version 4.15.3 is affected.