CVE-2018-0271

9.8 CRITICAL 3% exploit odds Fix listed Auth & access Network gear

What it is

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.

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.
Exploit odds: 2.5% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2018-05-17 03:29 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 01:30 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 2.5% in the next 30 days (EPSS).
Severity: 9.8 CRITICAL (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2018-05-17 03:29 UTC
Last modified: 2026-06-17 01:30 UTC
Exploit probability: 2.5% · EPSS, next 30 days
Weakness: CWE-287 · Improper authentication
Record status: Modified

Affected

Cisco Digital Network Architecture Center < 1.1.2

Attack profile CVSS 3.0 · 9.8

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

Raw vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Is it in your code?

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Fix and advisories

References

NVD record · CVE.org record