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TI-2022-05492 Aliases CVE-2022-20933GHSA-9vrx-xfr3-hfjj

Cisco Meraki MX and Z3 Teleworker Gateway VPN Denial of Service Vulnerability

Priority MEDIUM 46CWE-234Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

A vulnerability in the Cisco AnyConnect VPN server of Cisco Meraki MX and Cisco Meraki Z3 Teleworker Gateway devices could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient validation of client-supplied parameters while establishing an SSL VPN session. An attacker could exploit this vulnerability by crafting a malicious request and sending it to the affected device. A successful exploit could allow the attacker to cause the Cisco AnyConnect VPN server to crash and restart, resulting in the failure of the established SSL VPN connections and forcing remote users to initiate a new VPN connection and re-authenticate. A sustained attack could prevent new SSL VPN connections from being established. Note: When the attack traffic stops, the Cisco AnyConnect VPN server recovers gracefully without requiring manual intervention. Cisco Meraki has released software updates that address this vulnerability.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01142 66th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

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 Meraki MX Firmwareall versions—No fix listedCNA
  • Cisco Meraki MX Firmware VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 46

CPEVersionsRoleVendor
cpe:2.3:o:cisco:meraki_mx64_firmware:*:*:*:*:*:*:*:*16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1VulnerableCisco
cpe:2.3:h:cisco:meraki_mx64:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_mx64w_firmware:*:*:*:*:*:*:*:*16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1VulnerableCisco
cpe:2.3:h:cisco:meraki_mx64w:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_mx65_firmware:*:*:*:*:*:*:*:*16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1VulnerableCisco
cpe:2.3:h:cisco:meraki_mx65:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_mx65w_firmware:*:*:*:*:*:*:*:*16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1VulnerableCisco
cpe:2.3:h:cisco:meraki_mx65w:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_mx67_firmware:*:*:*:*:*:*:*:*16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1VulnerableCisco
cpe:2.3:h:cisco:meraki_mx67:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
  • cpe:2.3:o:cisco:meraki_mx64_firmware:*:*:*:*:*:*:*:* Versions 16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx64:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_mx64w_firmware:*:*:*:*:*:*:*:* Versions 16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx64w:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_mx65_firmware:*:*:*:*:*:*:*:* Versions 16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx65:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_mx65w_firmware:*:*:*:*:*:*:*:* Versions 16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx65w:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_mx67_firmware:*:*:*:*:*:*:*:* Versions 16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx67:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
Show 36 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:cisco:meraki_mx67cw_firmware:*:*:*:*:*:*:*:*16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1VulnerableCisco
cpe:2.3:h:cisco:meraki_mx67cw:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_mx67w_firmware:*:*:*:*:*:*:*:*16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1VulnerableCisco
cpe:2.3:h:cisco:meraki_mx67w:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_mx68_firmware:*:*:*:*:*:*:*:*16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1VulnerableCisco
cpe:2.3:h:cisco:meraki_mx68:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_mx68cw_firmware:*:*:*:*:*:*:*:*16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1VulnerableCisco
cpe:2.3:h:cisco:meraki_mx68cw:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_mx68w_firmware:*:*:*:*:*:*:*:*16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1VulnerableCisco
cpe:2.3:h:cisco:meraki_mx68w:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_mx75_firmware:*:*:*:*:*:*:*:*16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1VulnerableCisco
cpe:2.3:h:cisco:meraki_mx75:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_mx84_firmware:*:*:*:*:*:*:*:*16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1VulnerableCisco
cpe:2.3:h:cisco:meraki_mx84:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_mx85_firmware:*:*:*:*:*:*:*:*16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1VulnerableCisco
cpe:2.3:h:cisco:meraki_mx85:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_mx95_firmware:*:*:*:*:*:*:*:*16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1VulnerableCisco
cpe:2.3:h:cisco:meraki_mx95:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_mx100_firmware:*:*:*:*:*:*:*:*16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1VulnerableCisco
cpe:2.3:h:cisco:meraki_mx100:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_mx105_firmware:*:*:*:*:*:*:*:*16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1VulnerableCisco
cpe:2.3:h:cisco:meraki_mx105:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_mx250_firmware:*:*:*:*:*:*:*:*16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1VulnerableCisco
cpe:2.3:h:cisco:meraki_mx250:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_mx400_firmware:*:*:*:*:*:*:*:*16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1VulnerableCisco
cpe:2.3:h:cisco:meraki_mx400:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_mx450_firmware:*:*:*:*:*:*:*:*16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1VulnerableCisco
cpe:2.3:h:cisco:meraki_mx450:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_mx600_firmware:*:*:*:*:*:*:*:*16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1VulnerableCisco
cpe:2.3:h:cisco:meraki_mx600:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_vmx_firmware:*:*:*:*:*:*:*:*16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1VulnerableCisco
cpe:2.3:h:cisco:meraki_vmx:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_z3c_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableCisco
cpe:2.3:h:cisco:meraki_z3c:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_z3_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableCisco
cpe:2.3:h:cisco:meraki_z3:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
  • cpe:2.3:o:cisco:meraki_mx67cw_firmware:*:*:*:*:*:*:*:* Versions 16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx67cw:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_mx67w_firmware:*:*:*:*:*:*:*:* Versions 16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx67w:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_mx68_firmware:*:*:*:*:*:*:*:* Versions 16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx68:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_mx68cw_firmware:*:*:*:*:*:*:*:* Versions 16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx68cw:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_mx68w_firmware:*:*:*:*:*:*:*:* Versions 16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx68w:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_mx75_firmware:*:*:*:*:*:*:*:* Versions 16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx75:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_mx84_firmware:*:*:*:*:*:*:*:* Versions 16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx84:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_mx85_firmware:*:*:*:*:*:*:*:* Versions 16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx85:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_mx95_firmware:*:*:*:*:*:*:*:* Versions 16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx95:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_mx100_firmware:*:*:*:*:*:*:*:* Versions 16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx100:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_mx105_firmware:*:*:*:*:*:*:*:* Versions 16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx105:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_mx250_firmware:*:*:*:*:*:*:*:* Versions 16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx250:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_mx400_firmware:*:*:*:*:*:*:*:* Versions 16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx400:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_mx450_firmware:*:*:*:*:*:*:*:* Versions 16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx450:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_mx600_firmware:*:*:*:*:*:*:*:* Versions 16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx600:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_vmx_firmware:*:*:*:*:*:*:*:* Versions 16.2.0 to before 16.16.6; 17.0.0 to before 17.10.1 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_vmx:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_z3c_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_z3c:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_z3_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_z3:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-20933
  2. 2026-10-03 Alias added: GHSA-9vrx-xfr3-hfjj

References

Advisory 1

  • TI-2024-13425 Out-of-bounds write in Cisco Meraki MX Firmware CVSS 3.1HIGH 8.6
  • TI-2024-13423 Out-of-bounds write in Cisco Meraki MX Firmware CVSS 3.1HIGH 8.6
  • TI-2024-13422 Double free in Cisco Meraki MX Firmware CVSS 3.1HIGH 8.6
  • TI-2024-13424 Uncontrolled resource consumption in Cisco Meraki MX Firmware CVSS 3.1HIGH 7.5
  • TI-2024-13426 Uncontrolled resource consumption in Cisco Meraki MX Firmware CVSS 3.1HIGH 7.5
  • TI-2021-00951 Multiple Cisco Products Snort TCP Fast Open File Policy Bypass Vulnerability CVSS 3.1MEDIUM 5.8
See all 8 →

Sources

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