CVE-2025-20263 — Integer Overflow to Buffer Overflow in Cisco Adaptive Security Appliance Software

CWE-680 — Integer Overflow to Buffer Overflow4 documents4 sources
Severity
8.6HIGHNVD
EPSS
0.1%
top 77.02%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Cisco Adaptive Security Appliance SoftwareCisco Firepower Threat Defense Software
Timeline
PublishedAug 14

Description

A vulnerability in the web services interface of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a buffer overflow on an affected system. This vulnerability is due to insufficient boundary checks for specific data that is provided to the web services interface of an affected system. An attacker could exploit this vulnerability by sending a crafted HTTP request to the…

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:HExploitability: 3.9 | Impact: 4.0

Affected Packages2 packages

🔴Vulnerability Details

2
CVEList
Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Services Buffer Overflow Denial of Service Vulnerability↗2025-08-14
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GHSA
GHSA-8qmf-r775-gfcm: A vulnerability in the web services interface of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Def↗2025-08-14
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📋Vendor Advisories

1
Cisco
Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Web Services Denial of Service Vulnerability↗2025-08-14
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CVE-2025-20263 — Integer Overflow to Buffer Overflow | cvebase