CVE-2022-20907

Root privilege escalation via rescue-user CLI race

Published Jul 21, 2022 · Updated Nov 1, 2024

Privilege escalation in Cisco Nexus Dashboard 2.0, 2.1, and 2.2 before 2.2(1e) lets local users gain root via crafted CLI commands. The rescue-user CLI checks command input before later use, creating a TOCTOU race that lets a malicious payload escape the validated state. Exploitation requires authenticated local rescue-user access and grants root privileges, with no vendor-reported availability impact.

CVSS severity6.0
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege escalation in Cisco Nexus Dashboard 2.0, 2.1, and 2.2 before 2.2(1e) lets local users gain root via crafted CLI commands. The rescue-user CLI checks command input before later use, creating a TOCTOU race that lets a malicious payload escape the validated state. Exploitation requires authenticated local rescue-user access and grants root privileges, with no vendor-reported availability impact.

The record

CVE
CVE-2022-20907
Published
Jul 21, 2022
Updated
Nov 1, 2024
Vendor
ClamAV
Product
Cisco Nexus Dashboard
Classifications
CWE-269, CWE-367, T1068
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jul 21, 2022CVE publishedPublication date reported by the CVE source.
  2. Nov 1, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

ClamAV · Cisco Nexus Dashboardversion=n/a

Published CVSS scores

6.0Cisco Systems, Inc.CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N/E:X/RL:X/RC:X
6.7NIST NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-269Improper Privilege Management
CWE-367Time-of-check Time-of-use (TOCTOU) Race Condition
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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