Improper input validation in Cisco iOS 15.0(2)sg11a
CVE-2020-3226
A vulnerability in the Session Initiation Protocol (SIP) library of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient sanity checks on received SIP messages. An attacker could exploit this vulnerability by sending crafted SIP messages to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service condition.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.016 (74.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 74.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000
Affected products
- Cisco iOS 15.0(2)sg11a
- Cisco iOS — versions 15.4\(3\)m9, 15.7(3)m, 15.6\(2\)t
- Cisco iOS Xe — versions 3.10.0s, 3.10.1s, 3.10.2as
Weakness classification (CWE)
Public proof-of-concept exploits
References
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sip-Cv28… (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-3226?
- CVE-2020-3226 is a high-severity vulnerability in Cisco iOS 15.0(2)sg11a, classified under Improper Input Validation. CVSS score: 8.6/10. Published 2020-06-03.
- How severe is CVE-2020-3226?
- High severity. CVSS v3 base score is 8.6 out of 10.
- Is CVE-2020-3226 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.