Buffer overflow in Cisco Adaptive Security Appliance Software
CVE-2021-1493
A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker to cause a buffer overflow on an affected system. The 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 malicious HTTP request. A successful exploit could allow the attacker to cause a buffer overflow condition on the affected system, which could disclose data fragments or cause the device to reload, resulting in a denial of service (DoS) condition.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:H.
EPSS exploit prediction
EPSS: 0.012 (67.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 67.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-memc-dos… (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-1493?
- CVE-2021-1493 is a high-severity vulnerability in Cisco Adaptive Security Appliance Software, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.5/10. Published 2021-04-29.
- How severe is CVE-2021-1493?
- High severity. CVSS v3 base score is 8.5 out of 10.
- Is CVE-2021-1493 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.