4.3

CVE-2025-20135

Cisco Adaptive Security Appliance and Firepower Threat Defense Software DHCP Denial of Service Vulnerability

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.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerCisco
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Produkt Cisco Adaptive Security Appliance (ASA) Software
Default Statusunknown
Version 9.12.3
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Version 9.8.3
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Version 9.12.1
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Version 9.8.1
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Version 9.12.2
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Version 9.8.2.45
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Version 9.8.4
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Version 9.14.1
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Version 9.12.4
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Version 9.8.2.26
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Version 9.22.1.2
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HerstellerCisco
≫
Produkt Cisco Firepower Threat Defense Software
Default Statusunknown
Version 6.2.3.14
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Version 6.4.0.1
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Version 6.2.3.7
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Version 6.2.3
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Version 6.4.0.2
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VulnDex Vulnerability Enrichment
Diese Information steht angemeldeten Benutzern zur Verfügung. Login Login
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.03% 0.083
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
psirt@cisco.com 4.3 2.8 1.4
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE-401 Missing Release of Memory after Effective Lifetime

The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory.