CVE-2019-12656: cisco cgr_1000_firmware Improper Input Validation
Vulnerability summary
CVE-2019-12656 is a high (CVSS 7.5) Improper Input Validation vulnerability in cisco cgr_1000_firmware. EPSS estimates a 1.82% chance of exploitation in the next 30 days, higher than 78.4% of scored vulnerabilities.
Timeline
- 25-09-2019PublishedVulnerability first disclosed.
- 19-11-2024Last modifiedVulnerability information updated.
Description
A vulnerability in the IOx application environment of multiple Cisco platforms could allow an unauthenticated, remote attacker to cause the IOx web server to stop processing HTTPS requests, resulting in a denial of service (DoS) condition. The vulnerability is due to a Transport Layer Security (TLS) implementation issue. An attacker could exploit this vulnerability by sending crafted TLS packets to the IOx web server on an affected device. A successful exploit could allow the attacker to cause the IOx web server to stop processing HTTPS requests, resulting in a DoS condition.
CVSS metrics
4 scores · 2 sources · 3 versions- NVDNIST7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
1.82%
Chance of exploitation in the next 30 days
Percentile
78%
Versus all other CVEs
30-day change
0.00 pp
From 1.82% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Cisco7 products
- cgr_1000_firmwarena
- cisco industrial routers operating system software≥ unspecified, < n/a
- ic3000_firmwarena
- ie_4000_firmwarena
- industrial_ethernet_2000_series_firmware15.2\(6\)e
1 vendor · 7 products
References
1 links- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190925-ioxVendor AdvisoryX Refsource CISCO