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TI-2020-02950 Aliases CVE-2020-3400GHSA-wpmp-jhx9-xgq5

Cisco IOS XE Software Web UI Authorization Bypass Vulnerability

Priority MEDIUM 42CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-862.

Summary

A vulnerability in the web UI feature of Cisco IOS XE Software could allow an authenticated, remote attacker to utilize parts of the web UI for which they are not authorized.The vulnerability is due to insufficient authorization of web UI access requests. An attacker could exploit this vulnerability by sending a crafted HTTP request to the web UI. A successful exploit could allow the attacker to utilize parts of the web UI for which they are not authorized. This could allow a Read-Only user to perform actions of an Admin user.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00981 62nd percentileScored 2026-11-08
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
CiscoCisco IOS XE Softwareall versions—No fix listedCNA
  • Cisco IOS XE Software VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 15

CPEVersionsRoleVendor
cpe:2.3:o:cisco:ios_xe:16.2.2:*:*:*:*:*:*:*16.2.2VulnerableCisco
cpe:2.3:o:cisco:ios_xe:16.3.1:*:*:*:*:*:*:*16.3.1VulnerableCisco
cpe:2.3:o:cisco:ios_xe:16.3.1a:*:*:*:*:*:*:*16.3.1aVulnerableCisco
cpe:2.3:o:cisco:ios_xe:16.3.2:*:*:*:*:*:*:*16.3.2VulnerableCisco
cpe:2.3:o:cisco:ios_xe:16.3.3:*:*:*:*:*:*:*16.3.3VulnerableCisco
cpe:2.3:o:cisco:ios_xe:16.3.4:*:*:*:*:*:*:*16.3.4VulnerableCisco
cpe:2.3:o:cisco:ios_xe:16.3.5:*:*:*:*:*:*:*16.3.5VulnerableCisco
cpe:2.3:o:cisco:ios_xe:16.3.5b:*:*:*:*:*:*:*16.3.5bVulnerableCisco
cpe:2.3:o:cisco:ios_xe:16.3.6:*:*:*:*:*:*:*16.3.6VulnerableCisco
cpe:2.3:o:cisco:ios_xe:16.3.7:*:*:*:*:*:*:*16.3.7VulnerableCisco
  • cpe:2.3:o:cisco:ios_xe:16.2.2:*:*:*:*:*:*:* Versions 16.2.2 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:16.3.1:*:*:*:*:*:*:* Versions 16.3.1 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:16.3.1a:*:*:*:*:*:*:* Versions 16.3.1a Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:16.3.2:*:*:*:*:*:*:* Versions 16.3.2 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:16.3.3:*:*:*:*:*:*:* Versions 16.3.3 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:16.3.4:*:*:*:*:*:*:* Versions 16.3.4 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:16.3.5:*:*:*:*:*:*:* Versions 16.3.5 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:16.3.5b:*:*:*:*:*:*:* Versions 16.3.5b Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:16.3.6:*:*:*:*:*:*:* Versions 16.3.6 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:16.3.7:*:*:*:*:*:*:* Versions 16.3.7 Vulnerable ·Cisco
Show 5 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:cisco:ios_xe:16.3.8:*:*:*:*:*:*:*16.3.8VulnerableCisco
cpe:2.3:o:cisco:ios_xe:16.3.9:*:*:*:*:*:*:*16.3.9VulnerableCisco
cpe:2.3:o:cisco:ios_xe:16.3.10:*:*:*:*:*:*:*16.3.10VulnerableCisco
cpe:2.3:o:cisco:ios_xe:16.3.11:*:*:*:*:*:*:*16.3.11VulnerableCisco
cpe:2.3:o:cisco:ios_xe:17.2.1t:*:*:*:*:*:*:*17.2.1tVulnerableCisco
  • cpe:2.3:o:cisco:ios_xe:16.3.8:*:*:*:*:*:*:* Versions 16.3.8 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:16.3.9:*:*:*:*:*:*:* Versions 16.3.9 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:16.3.10:*:*:*:*:*:*:* Versions 16.3.10 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:16.3.11:*:*:*:*:*:*:* Versions 16.3.11 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:17.2.1t:*:*:*:*:*:*:* Versions 17.2.1t Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-3400
  2. 2026-10-03 Alias added: GHSA-wpmp-jhx9-xgq5

References

Advisory 1

  • TI-2023-06904 Cisco is providing an update for the ongoing investigation into observed exploitation of… KEVCVSS 3.1CRITICAL 10.0
  • TI-2018-00122 Memory corruption in Cisco IOS and IOS XE KEVCVSS 3.1CRITICAL 9.8
  • TI-2017-02977 Improper input validation in Cisco IOS and IOS XE Software KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-00135 Memory corruption in Cisco IOS, IOS XE, and IOS XR KEVCVSS 3.1HIGH 8.8
  • TI-2017-04498 Memory corruption in Cisco IOS KEVCVSS 3.1HIGH 8.8
  • TI-2017-04497 Memory corruption in Cisco IOS XE Software KEVCVSS 3.1HIGH 8.8
See all 561 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences