How severe is CVE-2016-0028?

CVE-2016-0028 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2016-0028 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 23% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-0028?

CVE-2016-0028 affects Microsoft Outlook Web Access. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-0028?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2016-0028 published?

CVE-2016-0028 was published on 2016-06-16 and last updated on 2026-06-17.

CVE-2016-0028

CVE-2016-0028 is a medium-severity vulnerability in Microsoft Outlook Web Access with a CVSS 3.x base score of 5.5. Its EPSS exploit-prediction score of 23% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-200.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 4.3
EPSS exploit prediction: 23% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Microsoft Outlook Web Access
Published: 2016-06-16
Last modified: 2026-06-17

Description

Outlook Web Access (OWA) in Microsoft Exchange Server 2013 SP1, Cumulative Update 11, and Cumulative Update 12 and 2016 Gold and Cumulative Update 1 does not properly restrict loading of IMG elements, which makes it easier for remote attackers to track users via a crafted HTML e-mail message, aka "Microsoft Exchange Information Disclosure Vulnerability."

Frequently asked questions

What is CVE-2016-0028?: Outlook Web Access (OWA) in Microsoft Exchange Server 2013 SP1, Cumulative Update 11, and Cumulative Update 12 and 2016 Gold and Cumulative Update 1 does not properly restrict loading of IMG elements, which makes it easier for remote attackers to track users via a crafted HTML e-mail message, aka "Microsoft Exchange Information Disclosure Vulnerability."
How severe is CVE-2016-0028?: CVE-2016-0028 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2016-0028 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 23% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-0028?: CVE-2016-0028 affects Microsoft Outlook Web Access. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-0028?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-0028 published?: CVE-2016-0028 was published on 2016-06-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:microsoft:outlook_web_access:*:*:*:*:*:*:*:*

More vulnerabilities in Microsoft Outlook Web Access

CVE-2010-3213 — Medium (CVSS 6.8): Cross-site request forgery (CSRF) vulnerability in Microsoft Outlook Web Access (owa/ev.owa) 2007 through SP2 allows…
CVE-2005-1052 — Medium (CVSS 5.0): Microsoft Outlook 2003 and Outlook Web Access (OWA) 2003 do not properly display comma separated addresses in the From…
CVE-2008-2248 — Medium (CVSS 4.3): Cross-site scripting (XSS) vulnerability in Outlook Web Access (OWA) for Exchange Server 2003 SP2 allows remote…
CVE-2008-2143 — Low (CVSS 1.9): Unspecified versions of Microsoft Outlook Web Access (OWA) use the Cache-Control: no-cache HTTP directive instead of…

All CVEs affecting Microsoft Outlook Web Access →

Other CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) vulnerabilities

CVE-2026-27604 — Critical (CVSS 10.0): FOSSBilling is a free, open-source billing and client management system. Starting in version 0.5.4 and prior to version…
CVE-2026-40965 — Critical (CVSS 10.0): Cloud Foundry UAA versions v76.12.0 through v78.12.0 are vulnerable to a private key exposure. The server contains a…
CVE-2026-42826 — Critical (CVSS 10.0): Exposure of sensitive information to an unauthorized actor in Azure DevOps allows an unauthorized attacker to disclose…
CVE-2025-29270 — Critical (CVSS 10.0): Incorrect access control in the realtime.cgi endpoint of Deep Sea Electronics devices DSE855 v1.1.0 to v1.1.26 allows…
CVE-2025-61481 — Critical (CVSS 10.0): An issue in MikroTik RouterOS v.7.14.2 and SwOS v.2.18 exposes the WebFig management interface over cleartext HTTP by…
CVE-2025-53624 — Critical (CVSS 10.0): The Docusaurus gists plugin adds a page to your Docusaurus instance, displaying all public gists of a GitHub user.…

Browse all CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) vulnerabilities →