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TI-2024-13426 Aliases CVE-2024-20502GHSA-2r9m-635c-rmwj

Uncontrolled resource consumption in Cisco Meraki MX Firmware

Priority LOW 39CWE-400Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-400.

Summary

A vulnerability in the Cisco AnyConnect VPN server of Cisco Meraki MX and Cisco Meraki Z Series Teleworker Gateway devices could allow an unauthenticated, remote attacker to cause a DoS condition on an affected device. This vulnerability is due to insufficient resource management while establishing SSL VPN sessions. An attacker could exploit this vulnerability by sending a series of crafted HTTPS requests to the VPN server of an affected device. A successful exploit could allow the attacker to cause the Cisco AnyConnect VPN server to stop accepting new connections, preventing new SSL VPN connections from being established. Existing SSL VPN sessions are not impacted. Note: When the attack traffic stops, the Cisco AnyConnect VPN server recovers gracefully without requiring manual intervention.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0052 44th 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 FirmwareN/A—No fix listedCNA
  • Cisco Meraki MX Firmware VendorCisco Affected N/A Fixed in — No fix listed CNA

CPE configurations NVD · 50

CPEVersionsRoleVendor
cpe:2.3:o:cisco:meraki_mx65_firmware:*:*:*:*:*:*:*:*17.6.0 to before 18.211.2VulnerableCisco
cpe:2.3:h:cisco:meraki_mx65:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_mx64_firmware:*:*:*:*:*:*:*:*17.6.0 to before 18.211.2VulnerableCisco
cpe:2.3:h:cisco:meraki_mx64:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_z4c_firmware:*:*:*:*:*:*:*:*16.2 to before 18.211.2VulnerableCisco
cpe:2.3:h:cisco:meraki_z4c:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_z4_firmware:*:*:*:*:*:*:*:*16.2 to before 18.211.2VulnerableCisco
cpe:2.3:h:cisco:meraki_z4:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_z3c_firmware:*:*:*:*:*:*:*:*16.2 to before 18.211.2VulnerableCisco
cpe:2.3:h:cisco:meraki_z3c:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
  • cpe:2.3:o:cisco:meraki_mx65_firmware:*:*:*:*:*:*:*:* Versions 17.6.0 to before 18.211.2 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx65:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_mx64_firmware:*:*:*:*:*:*:*:* Versions 17.6.0 to before 18.211.2 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx64:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_z4c_firmware:*:*:*:*:*:*:*:* Versions 16.2 to before 18.211.2 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_z4c:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_z4_firmware:*:*:*:*:*:*:*:* Versions 16.2 to before 18.211.2 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_z4:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_z3c_firmware:*:*:*:*:*:*:*:* Versions 16.2 to before 18.211.2 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_z3c:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
Show 40 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:cisco:meraki_z3_firmware:*:*:*:*:*:*:*:*16.2 to before 18.211.2VulnerableCisco
cpe:2.3:h:cisco:meraki_z3:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_vmx_firmware:*:*:*:*:*:*:*:*16.2 to before 18.211.2VulnerableCisco
cpe:2.3:h:cisco:meraki_vmx:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_mx600_firmware:*:*:*:*:*:*:*:*16.2 to before 18.211.2VulnerableCisco
cpe:2.3:h:cisco:meraki_mx600:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_mx450_firmware:*:*:*:*:*:*:*:*16.2 to before 18.211.2VulnerableCisco
cpe:2.3:h:cisco:meraki_mx450:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_mx400_firmware:*:*:*:*:*:*:*:*16.2 to before 18.211.2VulnerableCisco
cpe:2.3:h:cisco:meraki_mx400:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_mx250_firmware:*:*:*:*:*:*:*:*16.2 to before 18.211.2VulnerableCisco
cpe:2.3:h:cisco:meraki_mx250:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_mx105_firmware:*:*:*:*:*:*:*:*16.2 to before 18.211.2VulnerableCisco
cpe:2.3:h:cisco:meraki_mx105:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_mx100_firmware:*:*:*:*:*:*:*:*16.2 to before 18.211.2VulnerableCisco
cpe:2.3:h:cisco:meraki_mx100:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_mx95_firmware:*:*:*:*:*:*:*:*16.2 to before 18.211.2VulnerableCisco
cpe:2.3:h:cisco:meraki_mx95:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_mx85_firmware:*:*:*:*:*:*:*:*16.2 to before 18.211.2VulnerableCisco
cpe:2.3:h:cisco:meraki_mx85:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_mx84_firmware:*:*:*:*:*:*:*:*16.2 to before 18.211.2VulnerableCisco
cpe:2.3:h:cisco:meraki_mx84:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_mx75_firmware:*:*:*:*:*:*:*:*16.2 to before 18.211.2VulnerableCisco
cpe:2.3:h:cisco:meraki_mx75:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_mx68w_firmware:*:*:*:*:*:*:*:*16.2 to before 18.211.2VulnerableCisco
cpe:2.3:h:cisco:meraki_mx68w:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_mx68cw_firmware:*:*:*:*:*:*:*:*16.2 to before 18.211.2VulnerableCisco
cpe:2.3:h:cisco:meraki_mx68cw:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_mx68_firmware:*:*:*:*:*:*:*:*16.2 to before 18.211.2VulnerableCisco
cpe:2.3:h:cisco:meraki_mx68:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_mx67w_firmware:*:*:*:*:*:*:*:*16.2 to before 18.211.2VulnerableCisco
cpe:2.3:h:cisco:meraki_mx67w:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_mx67c_firmware:*:*:*:*:*:*:*:*16.2 to before 18.211.2VulnerableCisco
cpe:2.3:h:cisco:meraki_mx67c:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_mx67_firmware:*:*:*:*:*:*:*:*16.2 to before 18.211.2VulnerableCisco
cpe:2.3:h:cisco:meraki_mx67:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_mx65w_firmware:*:*:*:*:*:*:*:*16.2 to before 18.211.2VulnerableCisco
cpe:2.3:h:cisco:meraki_mx65w:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:meraki_mx64w_firmware:*:*:*:*:*:*:*:*16.2 to before 18.211.2VulnerableCisco
cpe:2.3:h:cisco:meraki_mx64w:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
  • cpe:2.3:o:cisco:meraki_z3_firmware:*:*:*:*:*:*:*:* Versions 16.2 to before 18.211.2 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_z3:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_vmx_firmware:*:*:*:*:*:*:*:* Versions 16.2 to before 18.211.2 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_vmx:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_mx600_firmware:*:*:*:*:*:*:*:* Versions 16.2 to before 18.211.2 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx600:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_mx450_firmware:*:*:*:*:*:*:*:* Versions 16.2 to before 18.211.2 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx450:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_mx400_firmware:*:*:*:*:*:*:*:* Versions 16.2 to before 18.211.2 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx400:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_mx250_firmware:*:*:*:*:*:*:*:* Versions 16.2 to before 18.211.2 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx250:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_mx105_firmware:*:*:*:*:*:*:*:* Versions 16.2 to before 18.211.2 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx105:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_mx100_firmware:*:*:*:*:*:*:*:* Versions 16.2 to before 18.211.2 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx100:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_mx95_firmware:*:*:*:*:*:*:*:* Versions 16.2 to before 18.211.2 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx95:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_mx85_firmware:*:*:*:*:*:*:*:* Versions 16.2 to before 18.211.2 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx85:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_mx84_firmware:*:*:*:*:*:*:*:* Versions 16.2 to before 18.211.2 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx84:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_mx75_firmware:*:*:*:*:*:*:*:* Versions 16.2 to before 18.211.2 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx75:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_mx68w_firmware:*:*:*:*:*:*:*:* Versions 16.2 to before 18.211.2 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx68w:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_mx68cw_firmware:*:*:*:*:*:*:*:* Versions 16.2 to before 18.211.2 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx68cw:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_mx68_firmware:*:*:*:*:*:*:*:* Versions 16.2 to before 18.211.2 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx68:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_mx67w_firmware:*:*:*:*:*:*:*:* Versions 16.2 to before 18.211.2 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx67w:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_mx67c_firmware:*:*:*:*:*:*:*:* Versions 16.2 to before 18.211.2 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx67c:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_mx67_firmware:*:*:*:*:*:*:*:* Versions 16.2 to before 18.211.2 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx67:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_mx65w_firmware:*:*:*:*:*:*:*:* Versions 16.2 to before 18.211.2 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx65w:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:meraki_mx64w_firmware:*:*:*:*:*:*:*:* Versions 16.2 to before 18.211.2 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:meraki_mx64w:-:*:*:*:*:*:*:* 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-2024-20502
  2. 2026-10-03 Alias added: GHSA-2r9m-635c-rmwj

References

Advisory 1

  • TI-2022-05492 Cisco Meraki MX and Z3 Teleworker Gateway VPN Denial of Service Vulnerability CVSS 3.1HIGH 8.6
  • 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-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