# CVE-2018-0924: Microsoft Exchange Information Disclosure Vulnerability

CVE-2018-0924 is fixed in 6 products on 1 platform, first by KB4073537, released March 13, 2018. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2018-0924
- Priority: Routine
- CVSS: n/a (Low)
- EPSS: 0.0803
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Vendor exploitability assessment: Exploitation Unlikely
- Published: Mar 13, 2018
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2018-0924

## Description

<p>An information disclosure vulnerability exists in the way that Microsoft Exchange Server handles URL redirects. If an impacted user is using Microsoft Exchange Outlook Web Access (OWA) Light, the vulnerability could allow an attacker to discover sensitive information that should otherwise not be disclosed, such as the URL of the user's OWA service.</p> <p>To exploit the vulnerability, an attacker could embed a link in an email and send it to a victim. The attacker would then have to trick the user into clicking the link. The attacker would be unable to force the user to click the link.</p> <p>The security update addresses the vulnerability by correcting how Microsoft Exchange handles URL redirects.</p>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Microsoft | Microsoft Exchange Server 2010 Service Pack 3 Update Rollup 20 |  | [KB4073537](https://patchblox.com/security/data/fix/microsoft/kb4073537.md) | Mar 13, 2018 |
| Microsoft | Microsoft Exchange Server 2013 Cumulative Update 18 |  | [KB4073392](https://patchblox.com/security/data/fix/microsoft/kb4073392.md) | Mar 13, 2018 |
| Microsoft | Microsoft Exchange Server 2013 Cumulative Update 19 |  | [KB4073392](https://patchblox.com/security/data/fix/microsoft/kb4073392.md) | Mar 13, 2018 |
| Microsoft | Microsoft Exchange Server 2013 Service Pack 1 |  | [KB4073392](https://patchblox.com/security/data/fix/microsoft/kb4073392.md) | Mar 13, 2018 |
| Microsoft | Microsoft Exchange Server 2016 Cumulative Update 7 |  | [KB4073392](https://patchblox.com/security/data/fix/microsoft/kb4073392.md) | Mar 13, 2018 |
| Microsoft | Microsoft Exchange Server 2016 Cumulative Update 8 |  | [KB4073392](https://patchblox.com/security/data/fix/microsoft/kb4073392.md) | Mar 13, 2018 |

---

Data as of 2026-11-07T18:46:35Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.