CVE-2017-12228

Severity: medium (CVSS 5.9 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-09-29 · updated 2026-06-17
Weakness: CWE-20

Description

A vulnerability in the Cisco Network Plug and Play application of Cisco IOS 12.4 through 15.6 and Cisco IOS XE 3.3 through 16.4 could allow an unauthenticated, remote attacker to gain unauthorized access to sensitive data by using an invalid certificate. The vulnerability is due to insufficient certificate validation by the affected software. An attacker could exploit this vulnerability by supplying a crafted certificate to an affected device. A successful exploit could allow the attacker to conduct man-in-the-middle attacks to decrypt confidential information on user connections to the affected software. Cisco Bug IDs: CSCvc33171.

Affected products

Cisco IOS: 12.4(25e)jao3a, 12.4(25e)jao20s, 12.4(25e)jap1n, 12.4(25e)jap9, 15.0(2)ej, 15.0(2)ej1 (+430)
Cisco IOS XE: through 15.4\(3\)s; 3.3.0xo, 3.3.1xo, 3.3.2xo, 3.5.0e, 3.5.1e, 3.5.2e (+138)

References

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