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TI-2024-13420 Aliases CVE-2024-20496GHSA-3phf-8x93-jmv2

Cisco SD-WAN vEdge Routers Denial of Service Vulnerability

Priority LOW 27CWE-787Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

A vulnerability in the UDP packet validation code of Cisco SD-WAN vEdge Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected system. This vulnerability is due to incorrect handling of a specific type of malformed UDP packet. An attacker in a machine-in-the-middle position could exploit this vulnerability by sending crafted UDP packets to an affected device. A successful exploit could allow the attacker to cause the device to reboot, resulting in a DoS condition on the affected system.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00225 13th 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
No
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 SD-WAN vEdge Cloud19.2.1; 20.1.12; 18.4.4; 19.3.0; 18.3.8; 19.2.2; 20.1.1; 18.3.6; 18.4.3; 18.4.302; 18.4.5; 18.4.303; 19.2.098; 19.1.0; 19.0.1a; 19.2.099; 18.3.7; 19.2.097; 18.3.1; 19.2.0; 18.3.4; 18.2.0; 18.4.1; 18.4.0; 18.3.5; 18.3.3; 18.3.0; 19.2.3; 20.3.1; 20.1.2; 19.2.929; 19.2.31; 20.3.2; 19.2.32; 18.4.6; 20.4.1; 19.2.4; 20.4.1.1; 20.3.3; 20.5.1; 20.1.3; 20.4.1.2; 20.4.2; 20.3.4; 20.6.1; 20.6.2; 20.7.1; 20.3.5; 20.6.3; 20.8.1; 20.7.2; 20.6.4; 20.9.1; 20.3.6; 20.9.1.1; 20.9.2; 20.6.5; 20.3.7; 20.9.3; 20.4.2.3; 20.3.4.3; 20.6.4.1; 20.6.3.2; 20.3.5.1; 20.9.3.1; 20.6.5.2; 20.3.7.1; 20.3.3.2; 20.6.1.2; 20.1.3.1; 20.9.2.2; 20.6.5.3; 20.6.3.3; 20.3.7.2; 20.6.5.4; 20.9.2.3; 20.3.8—No fix listedCNA
CiscoCisco SD-WAN vEdge router18.4.303; 18.3.7; 19.3.0; 18.2.0; 20.1.12; 19.2.099; 18.3.3; 18.3.6; 19.0.0; 18.4.0; 19.1.01; 19.2.098; 18.3.1; 18.4.302; 19.2.2; 18.3.5; 19.1.0; 20.1.11; 19.2.097; 18.4.5; 18.3.8; 18.3.0; 18.4.3; 18.4.4; 19.2.1; 18.3.4; 19.0.1a; 20.1.1; 18.4.1; 19.2.0; 19.2.3; 20.3.1; 20.1.2; 19.2.929; 19.2.31; 20.3.2; 19.2.32; 18.4.6; 20.4.1; 19.2.4; 20.4.1.1; 20.3.3; 20.5.1; 20.1.3; 20.4.1.2; 20.4.2; 20.3.4; 20.6.1; 20.6.2; 20.7.1; 20.7.1.2; 20.3.5; 20.9.1; 20.6.3; 20.8.1; 20.7.2; 20.6.4; 20.3.6; 20.9.2; 20.6.5; 20.3.7; 20.9.3; 20.6.5.1; 20.3.3.2; 20.6.4.1; 20.6.3.2; 20.3.4.3; 20.6.5.2; 20.9.3.1; 20.3.7.1; 20.3.5.1; 20.4.2.3; 20.6.1.2; 20.9.2.2; 20.1.3.1; 20.6.5.3; 20.6.3.3; 20.3.7.2; 20.6.5.4; 20.9.2.3; 20.3.8—No fix listedCNA
  • Cisco SD-WAN vEdge Cloud VendorCisco Affected 19.2.1; 20.1.12; 18.4.4; 19.3.0; 18.3.8; 19.2.2; 20.1.1; 18.3.6; 18.4.3; 18.4.302; 18.4.5; 18.4.303; 19.2.098; 19.1.0; 19.0.1a; 19.2.099; 18.3.7; 19.2.097; 18.3.1; 19.2.0; 18.3.4; 18.2.0; 18.4.1; 18.4.0; 18.3.5; 18.3.3; 18.3.0; 19.2.3; 20.3.1; 20.1.2; 19.2.929; 19.2.31; 20.3.2; 19.2.32; 18.4.6; 20.4.1; 19.2.4; 20.4.1.1; 20.3.3; 20.5.1; 20.1.3; 20.4.1.2; 20.4.2; 20.3.4; 20.6.1; 20.6.2; 20.7.1; 20.3.5; 20.6.3; 20.8.1; 20.7.2; 20.6.4; 20.9.1; 20.3.6; 20.9.1.1; 20.9.2; 20.6.5; 20.3.7; 20.9.3; 20.4.2.3; 20.3.4.3; 20.6.4.1; 20.6.3.2; 20.3.5.1; 20.9.3.1; 20.6.5.2; 20.3.7.1; 20.3.3.2; 20.6.1.2; 20.1.3.1; 20.9.2.2; 20.6.5.3; 20.6.3.3; 20.3.7.2; 20.6.5.4; 20.9.2.3; 20.3.8 Fixed in — No fix listed CNA
  • Cisco SD-WAN vEdge router VendorCisco Affected 18.4.303; 18.3.7; 19.3.0; 18.2.0; 20.1.12; 19.2.099; 18.3.3; 18.3.6; 19.0.0; 18.4.0; 19.1.01; 19.2.098; 18.3.1; 18.4.302; 19.2.2; 18.3.5; 19.1.0; 20.1.11; 19.2.097; 18.4.5; 18.3.8; 18.3.0; 18.4.3; 18.4.4; 19.2.1; 18.3.4; 19.0.1a; 20.1.1; 18.4.1; 19.2.0; 19.2.3; 20.3.1; 20.1.2; 19.2.929; 19.2.31; 20.3.2; 19.2.32; 18.4.6; 20.4.1; 19.2.4; 20.4.1.1; 20.3.3; 20.5.1; 20.1.3; 20.4.1.2; 20.4.2; 20.3.4; 20.6.1; 20.6.2; 20.7.1; 20.7.1.2; 20.3.5; 20.9.1; 20.6.3; 20.8.1; 20.7.2; 20.6.4; 20.3.6; 20.9.2; 20.6.5; 20.3.7; 20.9.3; 20.6.5.1; 20.3.3.2; 20.6.4.1; 20.6.3.2; 20.3.4.3; 20.6.5.2; 20.9.3.1; 20.3.7.1; 20.3.5.1; 20.4.2.3; 20.6.1.2; 20.9.2.2; 20.1.3.1; 20.6.5.3; 20.6.3.3; 20.3.7.2; 20.6.5.4; 20.9.2.3; 20.3.8 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-20496
  2. 2026-10-03 Alias added: GHSA-3phf-8x93-jmv2

References

Other 1

  • TI-2026-74174 Arbitrary file write in Cisco Secure Email Gateway via AMP feature KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-53490 Cisco Catalyst SD-WAN Manager System Account Authorization Bypass Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-53489 Cisco Secure Email Gateway SQL Injection Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-53488 Cisco Identity Services Engine Authentication Bypass Vulnerability KEVCVSS 3.1CRITICAL 10.0
  • TI-2026-16388 Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability KEVCVSS 3.1CRITICAL 10.0
  • TI-2026-16344 Cisco Secure Firewall Management Center Software Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 10.0
See all 7059 →

Sources

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