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4.3 Medium

CVE-2025-20135 A vulnerability in the DHCP client functionality of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and…

Description

A vulnerability in the DHCP client functionality of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, adjacent attacker to exhaust available memory. This vulnerability is due to improper validation of incoming DHCP packets. An attacker could exploit this vulnerability by repeatedly sending crafted DHCPv4 packets to an affected device. A successful exploit could allow the attacker to exhaust available memory, which would affect availability of services and prevent new processes from starting, resulting in a Denial of Service (DoS) condition that would require a manual reboot. Note: On Cisco Secure FTD Software, this vulnerability does not affect management interfaces.

Affected products and versions

Product Affected versions Fixed in
Cisco Adaptive Security Appliance (ASA) Software 9.22 9.22.1.1 → 9.22.1.2 No fix stated
Cisco Adaptive Security Appliance (ASA) Software 9.20 9.20.1 → 9.20.3.4 No fix stated
Cisco Adaptive Security Appliance (ASA) Software 9.19 9.19.1 → 9.19.1.38 No fix stated
Cisco Adaptive Security Appliance (ASA) Software 9.18 9.18.1 → 9.18.4.47 No fix stated
Cisco Adaptive Security Appliance (ASA) Software 9.17 9.17.1 → 9.17.1.46 No fix stated
Cisco Adaptive Security Appliance (ASA) Software 9.16 9.16.1 → 9.16.4.71 No fix stated
Cisco Adaptive Security Appliance (ASA) Software 9.15.1.1 No fix stated
Cisco Adaptive Security Appliance (ASA) Software 9.14 9.14.1 → 9.14.4.24 No fix stated
Cisco Adaptive Security Appliance (ASA) Software 9.12 9.12.1 → 9.12.4.67 No fix stated
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Product Affected versions Fixed in
Cisco Adaptive Security Appliance (ASA) Software 9.8 9.8.1 → 9.8.4.48 No fix stated
Cisco Firepower Threat Defense Software 7.6.0 No fix stated
Cisco Firepower Threat Defense Software 7.4 7.4.0 → 7.4.2.1 No fix stated
Cisco Firepower Threat Defense Software 7.3 7.3.0 → 7.3.1.2 No fix stated
Cisco Firepower Threat Defense Software 7.2 7.2.0 → 7.2.9 No fix stated
Cisco Firepower Threat Defense Software 7.1 7.1.0 → 7.1.0.3 No fix stated
Cisco Firepower Threat Defense Software 7.0 7.0.0 → 7.0.6.3 No fix stated
Cisco Firepower Threat Defense Software 6.6 6.6.0 → 6.6.7.2 No fix stated
Cisco Firepower Threat Defense Software 6.4 6.4.0 → 6.4.0.18 No fix stated
Cisco Firepower Threat Defense Software 6.2 6.2.3 → 6.2.3.18 No fix stated

References

Timeline

  1. Published
  2. Last modified

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