Open redirect vulnerability in Microsoft Exchange Server 2013 SP1, 2013 Cumulative Update…
Priority MEDIUM 48CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA.
Summary
Open redirect vulnerability in Microsoft Exchange Server 2013 SP1, 2013 Cumulative Update 12, 2013 Cumulative Update 13, 2016 Cumulative Update 1, and 2016 Cumulative Update 2 allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a crafted URL, aka "Microsoft Exchange Open Redirect Vulnerability."
Why it matters now
EPSS 0.15276 96th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_12:*:*:*:*:*:* | 2013 cumulative_update_12 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_13:*:*:*:*:*:* | 2013 cumulative_update_13 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:exchange_server:2013:sp1:*:*:*:*:*:* | 2013 sp1 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_1:*:*:*:*:*:* | 2016 cumulative_update_1 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_2:*:*:*:*:*:* | 2016 cumulative_update_2 | Vulnerable | Microsoft |
- cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_12:*:*:*:*:*:* Versions 2013 cumulative_update_12 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_13:*:*:*:*:*:* Versions 2013 cumulative_update_13 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:exchange_server:2013:sp1:*:*:*:*:*:* Versions 2013 sp1 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_1:*:*:*:*:*:* Versions 2016 cumulative_update_1 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_2:*:*:*:*:*:* Versions 2016 cumulative_update_2 Vulnerable ·Microsoft
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2016-3378
- 2026-10-03 Alias added: GHSA-55p2-r3rv-vvr9
References
Advisory 1
More Microsoft Exchange Server vulnerabilities
- TI-2024-14170 Microsoft Exchange Server Elevation of Privilege Vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2022-19610 Microsoft Exchange Server Elevation of Privilege Vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2021-13547 Microsoft Exchange Server Elevation of Privilege Vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2021-13502 Microsoft Exchange Server Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2021-08465 Microsoft Exchange Server Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2023-07929 Microsoft Exchange Server Remote Code Execution Vulnerability KEVCVSS 3.1HIGH 8.8
Sources
- CVE-2016-3378 · CVE Program
- CVE-2016-3378 · NVD
- FIRST EPSS
- GHSA-55p2-r3rv-vvr9 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences