CVE-2019-1805· NVD / CVE Program· CNA cisco

Cisco Wireless LAN Controller Secure Shell Unauthorized Access Vulnerability

Noroxi assessment

Priority: Monitor (action score 17/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 0.54% (FIRST EPSS).
Someone on the same network segment can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
Fixed version: Cisco Cisco Wireless LAN Controller (WLC) 8.5.
Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Cisco Cisco Wireless LAN Controller (WLC) 8.5 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

A vulnerability in certain access control mechanisms for the Secure Shell (SSH) server implementation for Cisco Wireless LAN Controller (WLC) Software could allow an unauthenticated, adjacent attacker to access a CLI instance on an affected device. The vulnerability is due to a lack of proper input- and validation-checking mechanisms for inbound SSH connections on an affected device. An attacker could exploit this vulnerability by attempting to establish an SSH connection to an affected controller. An exploit could allow the attacker to access an affected device's CLI to potentially cause further attacks. This vulnerability has been fixed in version 8.5(140.0).

MediumCVSS 4.3 · v3.1—No exploit Fix available

BDU:2019-01890

Published: Apr 17, 2019
Updated: Jun 16, 2026
EPSS: 0.5% · 44th percentile
CWE: CWE-284

Report tools

JSON

Action score

Monitor

Low priority for now.

CVSS: 17 / 40 · 4.3 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.5%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: 4.3
CNA · cisco: 5.4; 1.1 point gap

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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Not in KEV: no record of exploitation in the wild
No public exploit code on record
A fix has been released

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
cisco	wireless lan controller software	cpe:2.3:a:cisco:wireless_lan_controller_software

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

cisco wireless lan controller software8.3(141.0)

Versions reported by the vendor

Affected version ranges reported by the assigning authority (cisco). Independent of NVD's CPE analysis and usually ahead of it.

Cisco Cisco Wireless LAN Controller (WLC)
- unspecified and later · before 8.5(140.0)affected

Same product

cisco: all records

Other highest-scoring records for the same primary product.

CVE-2016-1363Buffer overflow in the redirection functionality in Cisco Wireless LAN Controller (WLC) Software 7.2 through 7.4 before 7.4.140.0(MD) and 7.
41Plan
CVE-2014-0703Cisco Wireless LAN Controller (WLC) devices 7.4 before 7.4.110.0 distribute Aironet IOS software with a race condition in the status of the
41Plan
CVE-2007-2036The SNMP implementation in the Cisco Wireless LAN Controller (WLC) before 20070419 uses the default read-only community public, and the defa
41Plan
CVE-2019-15276Cisco Wireless LAN Controller HTTP Parsing Engine Denial of Service Vulnerability
40Plan
CVE-2015-6314Cisco Wireless LAN Controller (WLC) devices with software 7.6.x, 8.0 before 8.0.121.0, and 8.1 before 8.1.131.0 allow remote attackers to ch
40Plan
CVE-2012-0371Cisco Wireless LAN Controller (WLC) devices with software 4.x, 5.x, 6.0, and 7.0 before 7.0.220.4, when CPU-based ACLs are enabled, allow re
38Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
Cisco Cisco Wireless LAN Controller (WLC)	8.5 · description	Vendor (CNA)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

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Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).