CVE-2015-0607

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2015-03-06 · updated 2026-06-17
Weakness: CWE-287

Description

The Authentication Proxy feature in Cisco IOS does not properly handle invalid AAA return codes from RADIUS and TACACS+ servers, which allows remote attackers to bypass authentication in opportunistic circumstances via a connection attempt that triggers an invalid code, as demonstrated by a connection attempt with a blank password, aka Bug IDs CSCuo09400 and CSCun16016.

Affected products

Cisco IOS: 15.4(1)t, 15.4(1)t1, 15.4(1)t2, 15.4(1)t3, 15.4(1)t4, 15.4(2)t (+5)

References

http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2015-0607
http://tools.cisco.com/security/center/viewAlert.x?alertId=37711
http://www.securityfocus.com/bid/72794
http://www.securitytracker.com/id/1031817
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2015-0607
http://tools.cisco.com/security/center/viewAlert.x?alertId=37711
http://www.securityfocus.com/bid/72794
http://www.securitytracker.com/id/1031817

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