Microsoft Exchange Server 2016 CU5 and Microsoft Exchange Server 2016 CU5 allow a spoofing vulnerability due to the way Outlook Web Access (OWA) validates web requests, aka "Microsoft Exchange Spoofing Vulnerability"
Published Dec 12, 2017
8.1
HIGHCVSS 3.0
EPSS 5.88%
Description
Microsoft Exchange Server 2016 CU5 and Microsoft Exchange Server 2016 CU5 allow a spoofing vulnerability due to the way Outlook Web Access (OWA) validates web requests, aka "Microsoft Exchange Spoofing Vulnerability".
Affected products
-
- Version Microsoft Exchange Server 2016 CU5 and Microsoft Exchange Server 2016 CU5StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Microsoft Corporation | Microsoft Exchange Server | n/a |
|
- 2016
- 2016
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
AV:N/AC:M/Au:N/C:P/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (24 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 5.88% (0.05884) | 92.99th | v5 (v2026.06.15) |
| Jun 15, 2026 | 5.88% (0.05884) | 92.25th | v5 (v2026.06.15) |
| Sep 3, 2025 | 14.80% (0.14796) | 94.30th | v4 (v2025.03.14) |
| May 30, 2025 | 11.98% (0.11981) | 93.37th | v4 (v2025.03.14) |
| May 2, 2025 | 13.66% (0.13658) | 93.88th | v4 (v2025.03.14) |
| Apr 5, 2025 | 10.55% (0.10554) | 92.59th | v4 (v2025.03.14) |
| Mar 30, 2025 | 8.61% (0.08614) | 91.60th | v4 (v2025.03.14) |
| Mar 29, 2025 | 25.65% (0.25652) | 93.94th | v4 (v2025.03.14) |
| Mar 17, 2025 | 8.61% (0.08614) | 91.79th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.33% (0.00327) | 71.73th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.33% (0.00327) | 70.06th | v3 (v2023.03.01) |
| Nov 22, 2023 | 0.33% (0.00327) | 67.65th | v3 (v2023.03.01) |
| Sep 27, 2023 | 0.46% (0.00464) | 72.52th | v3 (v2023.03.01) |
| Aug 1, 2023 | 0.39% (0.00389) | 69.74th | v3 (v2023.03.01) |
| May 5, 2023 | 0.40% (0.00403) | 69.82th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.45% (0.00454) | 71.30th | v3 (v2023.03.01) |
| Mar 6, 2023 | 6.42% (0.06416) | 91.03th | v2 (v2022.01.01) |
| Apr 4, 2022 | 6.42% (0.06416) | 90.14th | v2 (v2022.01.01) |
| Apr 1, 2022 | 5.85% (0.05853) | 89.57th | v2 (v2022.01.01) |
| Feb 4, 2022 | 5.85% (0.05853) | 77.42th | v2 (v2022.01.01) |
| Feb 3, 2022 | 9.25% (0.09255) | 86.70th | v1 |
| Jan 6, 2022 | 9.25% (0.09255) | 86.54th | v1 |
| Sep 1, 2021 | 9.25% (0.09255) | 93.94th | v1 |
| Apr 14, 2021 | 9.25% (0.09255) | 0.00th | v1 |
References (3)
- http://www.securityfocus.com/bid/102060 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1039996 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11932 x_refsource_CONFIRMPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/102060 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1039996 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11932 | x_refsource_CONFIRMPatchVendor Advisory |
Change history (0)
No recorded changes yet.