CVE-2018-15439: cisco cisco small business 300 series managed switches Use of Hard-coded Credentials
Vulnerability summary
CVE-2018-15439 is a critical (CVSS 9.8) Use of Hard-coded Credentials vulnerability in cisco cisco small business 300 series managed switches. EPSS estimates a 49.74% chance of exploitation in the next 30 days, higher than 98.8% of scored vulnerabilities. 1 public exploit is recorded.
Timeline
- 08-11-2018PublishedVulnerability first disclosed.
- 26-11-2024Last modifiedVulnerability information updated.
Description
A vulnerability in the Cisco Small Business Switches software could allow an unauthenticated, remote attacker to bypass the user authentication mechanism of an affected device. The vulnerability exists because under specific circumstances, the affected software enables a privileged user account without notifying administrators of the system. An attacker could exploit this vulnerability by using this account to log in to an affected device and execute commands with full admin rights. Cisco has not released software updates that address this vulnerability. This advisory will be updated with fixed software information once fixed software becomes available. There is a workaround to address this vulnerability.
CVSS metrics
4 scores · 2 sources · 3 versions- NVDNIST9.8CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
49.74%
Chance of exploitation in the next 30 days
Percentile
99%
Versus all other CVEs
30-day change
0.00 pp
From 49.74% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundCisco Prime Infrastructure Runrshell Privilege Escalation
exploit/linux/local/cpi_runrshell_priv_esc
Maturity: weaponized
Weaknesses
CWE · root causeAffected systems
1 vendor · 115 products
References
2 links- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181107-sbsw-privaccVendor AdvisoryX Refsource CISCO