CVE-2018-0271
Description
A vulnerability in the API gateway of the Cisco Digital Network Architecture (DNA) Center could allow an unauthenticated, remote attacker to bypass authentication and access critical services. The vulnerability is due to a failure to normalize URLs prior to servicing requests. An attacker could exploit this vulnerability by submitting a crafted URL designed to exploit the issue. A successful exploit could allow the attacker to gain unauthenticated access to critical services, resulting in elevated privileges in DNA Center. This vulnerability affects Cisco DNA Center Software Releases prior to 1.1.2. Cisco Bug IDs: CSCvi09394.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Cisco DNA Center prior to 1.1.2 has an authentication bypass vulnerability via URL normalization issue, allowing unauthenticated remote attackers to access critical services.
Vulnerability
The vulnerability resides in the API gateway of the Cisco Digital Network Architecture (DNA) Center due to a failure to normalize URLs prior to servicing requests. This allows an unauthenticated, remote attacker to bypass authentication. The issue affects Cisco DNA Center Software Releases prior to 1.1.2 [1].
Exploitation
An attacker can exploit this vulnerability by submitting a crafted URL designed to exploit the URL normalization flaw. No authentication or user interaction is required; the attacker only needs network access to the affected system [1].
Impact
Successful exploitation allows the attacker to gain unauthenticated access to critical services, resulting in elevated privileges within the DNA Center environment [1].
Mitigation
Cisco has released fixed software in version 1.1.2 and later. Customers should upgrade to a fixed release. No workarounds are available. The fix is addressed in Cisco bug ID CSCvi09394 [1].
AI Insight generated on May 25, 2026. Synthesized from this CVE's description and the cited reference URLs; citations are validated against the source bundle.
Affected products
1- Range: <1.1.2
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
2- www.securityfocus.com/bid/104191mitrevdb-entryx_refsource_BID
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180516-dna2mitrex_refsource_CONFIRM
News mentions
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