CVE-2020-3229Network attack vector

Read-Only-to-Administrator escalation via modified HTTP request

Published Jun 3, 2020 · Updated Nov 15, 2024

Authorization bypass in Cisco IOS XE Web Management Software allows remote authenticated users to perform administrator actions. The administration GUI incorrectly applies RBAC to modified HTTP requests, allowing a Read-Only account to execute CLI commands or change configuration with Administrator privileges. Exploitation requires a vulnerable IOS XE release with the HTTP Server feature enabled, and disabled active session modules block the affected HTTP or HTTPS path.

CVSS severity8.8
High
EPSS probability5.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Cisco IOS XE Web Management Software allows remote authenticated users to perform administrator actions. The administration GUI incorrectly applies RBAC to modified HTTP requests, allowing a Read-Only account to execute CLI commands or change configuration with Administrator privileges. Exploitation requires a vulnerable IOS XE release with the HTTP Server feature enabled, and disabled active session modules block the affected HTTP or HTTPS path.

The record

CVE
CVE-2020-3229
Published
Jun 3, 2020
Updated
Nov 15, 2024
Vendor
ClamAV
Product
Cisco IOS XE Software
Classifications
CWE-863, CWE-264, T1068
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 3, 2020CVE publishedPublication date reported by the CVE source.
  2. Nov 15, 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 vectornetwork
Required privilegesauthenticated

What is affected?

ClamAV · Cisco IOS XE Softwareversion=n/a

Published CVSS scores

8.8CiscoCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:X
9.0NIST NVDAV:N/AC:L/Au:S/C:C/I:C/A:C
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/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)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization
CWE-264Permissions, Privileges, and Access Controls
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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