CVE-2015-20128

What it is

FooSun DotNetCMS 1.0 and 2.0 contains an SQL injection vulnerability that allows unauthenticated attackers to manipulate MSSQL queries through the CityId parameter. Attackers can send GET requests to /user/City_ajax.aspx with UNION SELECT payloads in CityId, concatenated unsanitized into the sys_City query, to extract database information. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-14.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of data exposure.

Exploit odds

0.3% chance of exploitation in the next 30 days (EPSS).

Fix

No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

1. 2026-10-14 20:25 UTC ReservedThe CVE id was reserved by its CNA
2. 2026-10-20 21:17 UTC PublishedDisclosed publicly on CVE.org and NVD
3. 2026-10-23 16:16 UTC Last updatedMost recent change to the record

Details

Published

2026-10-20 21:17 UTC

Last modified

2026-10-23 16:16 UTC

Exploit probability

0.3% · EPSS, next 30 days

Weakness

CWE-89 · SQL injection

Record status

Deferred

Attack profile CVSS 4.0 · 8.8

Attack vector

Network

Complexity

Low

Attack requirements

None

Privileges needed

None

User interaction

None

Confidentiality

High

Integrity

Low

Availability

None